<!-- ============================================
     ::DATATOOL:: Generated from "pcsubstance.asn"
     ::DATATOOL:: by application DATATOOL version 2.3.1
     ::DATATOOL:: on 02/14/2012 23:05:04
     ============================================ -->

<!-- ============================================ -->
<!-- This section is mapped from module "NCBI-PCSubstance"
================================================= -->

<!--
 $Id: pcsubstance.asn 353134 2012-02-13 19:08:39Z bolton $
 ===========================================================================

                            PUBLIC DOMAIN NOTICE
               National Center for Biotechnology Information

  This software/database is a "United States Government Work" under the
  terms of the United States Copyright Act.  It was written as part of
  the author's official duties as a United States Government employee and
  thus cannot be copyrighted.  This software/database is freely available
  to the public for use. The National Library of Medicine and the U.S.
  Government have not placed any restriction on its use or reproduction.

  Although all reasonable efforts have been taken to ensure the accuracy
  and reliability of the software and data, the NLM and the U.S.
  Government do not and cannot warrant the performance or results that
  may be obtained by using this software or data. The NLM and the U.S.
  Government disclaim all warranties, express or implied, including
  warranties of performance, merchantability or fitness for any particular
  purpose.

  Please cite the author in any work or product based on this material.

 ===========================================================================

 Authors:  NCBI Structure Group

 File Description:
      ASN.1 definitions for PubChem small molecule database

 ===========================================================================
-->

<!-- Elements used by other modules:
          PC-Substance,
          PC-Compound,
          PC-Substances,
          PC-Compounds,
          PC-Source,
          PC-ID,
          PC-InfoData,
          PC-XRefData -->

<!-- Elements referenced from other modules:
          Pub FROM NCBI-Pub,
          Date,
          Object-id FROM NCBI-General -->
<!-- ============================================ -->

<!-- Root Record for Chemical Substance Definition -->
<!ELEMENT PC-Substance (
        PC-Substance_sid, 
        PC-Substance_source, 
        PC-Substance_pub?, 
        PC-Substance_synonyms?, 
        PC-Substance_comment?, 
        PC-Substance_xref?, 
        PC-Substance_compound?)>

<!--
 Internal Tracking Information
 Substance ID/Version  [Either valid ID or a "0" dummy
   value, if "source" is to be used]
   Note: Version is for internal use (only?)
   Note: A valid ID is greater than "0"
-->
<!ELEMENT PC-Substance_sid (PC-ID)>

<!-- Data Source for this Submission -->
<!ELEMENT PC-Substance_source (PC-Source)>

<!--
 Substance Description Information
 Articles Describing this Substance
-->
<!ELEMENT PC-Substance_pub (Pub*)>

<!-- Substance Names provided by Depositor -->
<!ELEMENT PC-Substance_synonyms (PC-Substance_synonyms_E*)>


<!ELEMENT PC-Substance_synonyms_E (#PCDATA)>

<!-- Comments and Description provided by Depositor -->
<!ELEMENT PC-Substance_comment (PC-Substance_comment_E*)>


<!ELEMENT PC-Substance_comment_E (#PCDATA)>

<!-- X-Ref/LinkOut Data provided by Depositor -->
<!ELEMENT PC-Substance_xref (PC-XRefData*)>

<!--
 Structure Description
 Original Deposited Structure Information
-->
<!ELEMENT PC-Substance_compound (PC-Compounds)>

<!-- Holder for groups of Substances -->
<!ELEMENT PC-Substances (PC-Substance*)>

<!-- ID and Version Description Information -->
<!ELEMENT PC-ID (
        PC-ID_id, 
        PC-ID_version)>

<!--
 Unique "Global" ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-ID_id (%INTEGER;)>

<!--
 Incremented when Depositor updates record
   Note: For Internal Use (only?)
-->
<!ELEMENT PC-ID_version (%INTEGER;)>

<!-- Describes Substance Source, if from another database -->
<!ELEMENT PC-Source (
        PC-Source_individual | 
        PC-Source_db | 
        PC-Source_mmdb)>

<!-- Individual Submission -->
<!ELEMENT PC-Source_individual (Pub)>

<!-- External DB Submission -->
<!ELEMENT PC-Source_db (PC-DBTracking)>

<!-- MMDB Submission (deprecated) -->
<!ELEMENT PC-Source_mmdb (PC-MMDBSource)>

<!-- External DB Tracking Information -->
<!ELEMENT PC-DBTracking (
        PC-DBTracking_name, 
        PC-DBTracking_source-id, 
        PC-DBTracking_date?, 
        PC-DBTracking_description?, 
        PC-DBTracking_pub?)>

<!-- Unique Name of External Database -->
<!ELEMENT PC-DBTracking_name (#PCDATA)>

<!-- Primary Unique ID used by External DB -->
<!ELEMENT PC-DBTracking_source-id (Object-id)>

<!-- External Database Release Date -->
<!ELEMENT PC-DBTracking_date (Date)>

<!-- External Database Release Code/Description -->
<!ELEMENT PC-DBTracking_description (#PCDATA)>

<!-- Data Submission to same DB by original Author -->
<!ELEMENT PC-DBTracking_pub (Pub)>

<!-- MMDB Source Record detailing specific location or part of an MMDB Record -->
<!ELEMENT PC-MMDBSource (
        PC-MMDBSource_mmdb-id, 
        PC-MMDBSource_molecule-id, 
        PC-MMDBSource_molecule-name, 
        PC-MMDBSource_residue-id?, 
        PC-MMDBSource_residue-name?, 
        PC-MMDBSource_atom-id?, 
        PC-MMDBSource_atom-name?)>

<!--
 MMDB Record ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-MMDBSource_mmdb-id (%INTEGER;)>

<!--
 MMDB Molecule ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-MMDBSource_molecule-id (%INTEGER;)>

<!-- MMDB Molecule Name -->
<!ELEMENT PC-MMDBSource_molecule-name (PC-MMDBSource_molecule-name_E*)>


<!ELEMENT PC-MMDBSource_molecule-name_E (#PCDATA)>

<!--
 Residue ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-MMDBSource_residue-id (%INTEGER;)>

<!-- Residue Name -->
<!ELEMENT PC-MMDBSource_residue-name (#PCDATA)>

<!--
 Atom ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-MMDBSource_atom-id (%INTEGER;)>

<!-- Atom Name -->
<!ELEMENT PC-MMDBSource_atom-name (#PCDATA)>

<!-- Depositor Provided X-Ref and LinkOut data for Entrez -->
<!ELEMENT PC-XRefData (
        PC-XRefData_regid | 
        PC-XRefData_rn | 
        PC-XRefData_mesh | 
        PC-XRefData_pmid | 
        PC-XRefData_gi | 
        PC-XRefData_mmdb | 
        PC-XRefData_sid | 
        PC-XRefData_cid | 
        PC-XRefData_dburl | 
        PC-XRefData_sburl | 
        PC-XRefData_asurl | 
        PC-XRefData_protein-gi | 
        PC-XRefData_nucleotide-gi | 
        PC-XRefData_taxonomy | 
        PC-XRefData_aid | 
        PC-XRefData_mim | 
        PC-XRefData_gene | 
        PC-XRefData_probe | 
        PC-XRefData_biosystem | 
        PC-XRefData_geogse | 
        PC-XRefData_geogsm | 
        PC-XRefData_patent)>

<!-- External Database Registry ID -->
<!ELEMENT PC-XRefData_regid (#PCDATA)>

<!-- Registry Number (e.g., EC Number, CAS Number) -->
<!ELEMENT PC-XRefData_rn (#PCDATA)>

<!-- MESH Index Term -->
<!ELEMENT PC-XRefData_mesh (#PCDATA)>

<!--
 PubMed ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_pmid (%INTEGER;)>

<!--
 GenBank General ID
   Note: Please use protein-gi or nucleotide-gi, if possible
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_gi (%INTEGER;)>

<!--
 MMDB ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_mmdb (%INTEGER;)>

<!--
 PubChem Substance ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_sid (%INTEGER;)>

<!--
 PubChem Compound ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_cid (%INTEGER;)>

<!-- Depositor Source Database Homepage -->
<!ELEMENT PC-XRefData_dburl (#PCDATA)>

<!-- Depositor Homepage for a Substance -->
<!ELEMENT PC-XRefData_sburl (#PCDATA)>

<!-- Depositor Homepage for an Assay -->
<!ELEMENT PC-XRefData_asurl (#PCDATA)>

<!--
 GenBank General ID for a Protein
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_protein-gi (%INTEGER;)>

<!--
 GenBank General ID for a Nucleotide
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_nucleotide-gi (%INTEGER;)>

<!--
 Taxonomy ID for an Organism
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_taxonomy (%INTEGER;)>

<!--
 PubChem BioAssay ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_aid (%INTEGER;)>

<!--
 MIM, Mendelian Inheritance in Man, Number 
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_mim (%INTEGER;)>

<!--
 Entrez Gene ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_gene (%INTEGER;)>

<!--
 Probe ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_probe (%INTEGER;)>

<!--
 BioSystem ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_biosystem (%INTEGER;)>

<!--
 Gene Expression Omnibus Series Accession (GEO GSE) ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_geogse (%INTEGER;)>

<!--
 Gene Expression Omnibus Sample Accession (GEO GSM) ID
   Note: Must be greater than "0" or, if invalid, "0"
-->
<!ELEMENT PC-XRefData_geogsm (%INTEGER;)>

<!-- Patent Identifier (e.g., USPTO, EPO, WPO, JPO, CPO) -->
<!ELEMENT PC-XRefData_patent (#PCDATA)>

<!-- Compound Record -->
<!ELEMENT PC-Compound (
        PC-Compound_id, 
        PC-Compound_atoms?, 
        PC-Compound_bonds?, 
        PC-Compound_stereo?, 
        PC-Compound_coords?, 
        PC-Compound_charge?, 
        PC-Compound_props?, 
        PC-Compound_stereogroups?, 
        PC-Compound_count?, 
        PC-Compound_vbalt?)>

<!--
 Tracking Information
 Compound Qualifier (Type/ID)
-->
<!ELEMENT PC-Compound_id (PC-CompoundType)>

<!-- AtomID/Type Information -->
<!ELEMENT PC-Compound_atoms (PC-Atoms)>

<!-- BondID/Type/Atom Information -->
<!ELEMENT PC-Compound_bonds (PC-Bonds)>

<!-- StereoCenter Descriptions -->
<!ELEMENT PC-Compound_stereo (PC-StereoCenter*)>

<!-- 2D/3D Coordinate Sets of Compound -->
<!ELEMENT PC-Compound_coords (PC-Coordinates*)>

<!-- Provided Total Formal Charge  (Signed Integer) -->
<!ELEMENT PC-Compound_charge (%INTEGER;)>

<!-- Derived (computed) Properties -->
<!ELEMENT PC-Compound_props (PC-InfoData*)>

<!-- Relative stereochemistry groups -->
<!ELEMENT PC-Compound_stereogroups (PC-StereoGroup*)>

<!-- Counts of various properties -->
<!ELEMENT PC-Compound_count (PC-Count)>

<!-- Alternate Valence-Bond Forms -->
<!ELEMENT PC-Compound_vbalt (PC-Compounds)>

<!-- Holder for groups of Compounds -->
<!ELEMENT PC-Compounds (PC-Compound*)>

<!--
 Qualification used to describe the type of Compound deposited, standardized, or derived.
    Please note that mixtures/cocktails may be specified using previously deposited substances.
-->
<!ELEMENT PC-CompoundType (
        PC-CompoundType_type?, 
        PC-CompoundType_id?)>
<!--
  Compound Qualifier or Type
 For Compound Depositions
-->
<!ELEMENT PC-CompoundType_type (%INTEGER;)>

<!--
    deposited	-  Original Deposited Compound
         For Standardized Compounds
    standardized	-  Standardized Form of a Deposited Compound
    component	-  Component of a Standardized Compound
    neutralized	-  Neutralized Form of a Standardized Compound
         For Mixture/Cocktail Depositions
    mixture	-  Substance that is a component of a mixture
         For Theoretical Compounds
    tautomer	-  Predicted Tautomer Form
    pka-state	-  Predicted Ionized pKa Form
    unknown	-  Unknown Compound Type
-->
<!ATTLIST PC-CompoundType_type value (
        deposited |
        standardized |
        component |
        neutralized |
        mixture |
        tautomer |
        pka-state |
        unknown
        ) #IMPLIED >

<!--  Compound Namespace and ID  (absent for "deposited" type compounds) -->
<!ELEMENT PC-CompoundType_id (
        PC-CompoundType_id_cid | 
        PC-CompoundType_id_sid | 
        PC-CompoundType_id_xid)>

<!--  Standardized Compound -->
<!ELEMENT PC-CompoundType_id_cid (%INTEGER;)>

<!--  PubChem Substance (for "mixture" type compounds) -->
<!ELEMENT PC-CompoundType_id_sid (%INTEGER;)>

<!--  PubChem Theoretical Compound -->
<!ELEMENT PC-CompoundType_id_xid (%INTEGER;)>

<!-- Counts of various properties of a Compound -->
<!ELEMENT PC-Count (
        PC-Count_heavy-atom, 
        PC-Count_atom-chiral, 
        PC-Count_atom-chiral-def, 
        PC-Count_atom-chiral-undef, 
        PC-Count_bond-chiral, 
        PC-Count_bond-chiral-def, 
        PC-Count_bond-chiral-undef, 
        PC-Count_isotope-atom, 
        PC-Count_covalent-unit, 
        PC-Count_tautomers)>

<!-- Total count of non-Hydrogen (Heavy) Atoms -->
<!ELEMENT PC-Count_heavy-atom (%INTEGER;)>

<!--
 StereoChemistry Counts
 Total count of (SP3) Chiral Atoms
-->
<!ELEMENT PC-Count_atom-chiral (%INTEGER;)>

<!-- Total count of Defined (SP3) Chiral Atoms -->
<!ELEMENT PC-Count_atom-chiral-def (%INTEGER;)>

<!-- Total count of Undefined (SP3) Chiral Atoms -->
<!ELEMENT PC-Count_atom-chiral-undef (%INTEGER;)>

<!-- Total count of (SP2) Chiral Bonds -->
<!ELEMENT PC-Count_bond-chiral (%INTEGER;)>

<!-- Total count of (SP2) Defined Chiral Bonds -->
<!ELEMENT PC-Count_bond-chiral-def (%INTEGER;)>

<!-- Total count of (SP2) Undefined Chiral Bonds -->
<!ELEMENT PC-Count_bond-chiral-undef (%INTEGER;)>

<!--
 Isotopic Counts
 Total count of Atoms with Isotopic Information
-->
<!ELEMENT PC-Count_isotope-atom (%INTEGER;)>

<!--
 Discrete Structure Counts
 Total count of covalently-bonded units in the record
-->
<!ELEMENT PC-Count_covalent-unit (%INTEGER;)>

<!-- Number of possible tautomers (Max. 999) -->
<!ELEMENT PC-Count_tautomers (%INTEGER;)>

<!--
 List of atom identifiers which are in a common stereochemistry group.
 All atoms in this group possess the characteristic of the type specified.
 The convention adopted is intended to be compatible with MDL's Enhanced
 Stereochemical Representation white paper.
 An atom can only be member of a single stereo group, and all atoms
 in a stereo group must have a stereo descriptor.
 Stereogroups only apply to stereocenters that can have parity.
-->
<!ELEMENT PC-StereoGroup (
        PC-StereoGroup_type, 
        PC-StereoGroup_aid)>

<!ELEMENT PC-StereoGroup_type (%INTEGER;)>

<!--
    absolute	-  Absolute configuration is known
    or	-  Relative configuration is known (absolute configuration is unknown)
    and	-  Mixture of stereoisomers
    unknown	-  Unknown configuration type
-->
<!ATTLIST PC-StereoGroup_type value (
        absolute |
        or |
        and |
        unknown
        ) #IMPLIED >


<!--
 Atom Identifiers of atoms in this group
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoGroup_aid (PC-StereoGroup_aid_E*)>


<!ELEMENT PC-StereoGroup_aid_E (%INTEGER;)>

<!-- Compound Description/Descriptor Data -->
<!ELEMENT PC-InfoData (
        PC-InfoData_urn, 
        PC-InfoData_value)>

<!-- Universal Resource Name  [for Value Qualification] -->
<!ELEMENT PC-InfoData_urn (PC-Urn)>
<!-- Data Value -->
<!ELEMENT PC-InfoData_value (
        PC-InfoData_value_bval | 
        PC-InfoData_value_bvec | 
        PC-InfoData_value_ival | 
        PC-InfoData_value_ivec | 
        PC-InfoData_value_fval | 
        PC-InfoData_value_fvec | 
        PC-InfoData_value_sval | 
        PC-InfoData_value_slist | 
        PC-InfoData_value_date | 
        PC-InfoData_value_binary | 
        PC-InfoData_value_bitlist)>

<!-- Boolean or Binary -->
<!ELEMENT PC-InfoData_value_bval EMPTY>
<!ATTLIST PC-InfoData_value_bval value ( true | false ) #REQUIRED >


<!-- Boolean Vector -->
<!ELEMENT PC-InfoData_value_bvec (PC-InfoData_value_bvec_E*)>


<!ELEMENT PC-InfoData_value_bvec_E EMPTY>
<!ATTLIST PC-InfoData_value_bvec_E value ( true | false ) #REQUIRED >


<!-- Integer (signed or unsigned) -->
<!ELEMENT PC-InfoData_value_ival (%INTEGER;)>

<!-- Integer Vector -->
<!ELEMENT PC-InfoData_value_ivec (PC-InfoData_value_ivec_E*)>


<!ELEMENT PC-InfoData_value_ivec_E (%INTEGER;)>

<!-- Float or Double -->
<!ELEMENT PC-InfoData_value_fval (%REAL;)>

<!-- Double Vector -->
<!ELEMENT PC-InfoData_value_fvec (PC-InfoData_value_fvec_E*)>


<!ELEMENT PC-InfoData_value_fvec_E (%REAL;)>

<!-- String -->
<!ELEMENT PC-InfoData_value_sval (#PCDATA)>

<!-- List of Strings -->
<!ELEMENT PC-InfoData_value_slist (PC-InfoData_value_slist_E*)>


<!ELEMENT PC-InfoData_value_slist_E (#PCDATA)>

<!-- Date -->
<!ELEMENT PC-InfoData_value_date (Date)>

<!-- Binary Data -->
<!ELEMENT PC-InfoData_value_binary (%OCTETS;)>

<!-- Bit List (specialized version of Boolean vector) -->
<!ELEMENT PC-InfoData_value_bitlist (%BITS;)>

<!--
 Universal Resource Name 
    Provides explicit source information on derived or calculated data 
-->
<!ELEMENT PC-Urn (
        PC-Urn_label, 
        PC-Urn_name?, 
        PC-Urn_datatype?, 
        PC-Urn_parameters?, 
        PC-Urn_implementation?, 
        PC-Urn_version?, 
        PC-Urn_software?, 
        PC-Urn_source?, 
        PC-Urn_release?)>

<!-- Generic Name or Label for Display  [e.g., "Log P"] -->
<!ELEMENT PC-Urn_label (#PCDATA)>

<!-- Qualified Name  [e.g., "XlogP"] -->
<!ELEMENT PC-Urn_name (#PCDATA)>

<!-- Specific Data Type of Value  [e.g., binary] -->
<!ELEMENT PC-Urn_datatype (PC-UrnDataType)>

<!-- Implementation Parameter  [e.g., "metal=0"] -->
<!ELEMENT PC-Urn_parameters (#PCDATA)>

<!-- Implementation Name  [e.g., "E_XlogP"] -->
<!ELEMENT PC-Urn_implementation (#PCDATA)>

<!-- Implementation Version  [e.g., "3.317"] -->
<!ELEMENT PC-Urn_version (#PCDATA)>

<!-- Implementation Software  [e.g., "Cactvs"] -->
<!ELEMENT PC-Urn_software (#PCDATA)>

<!-- Implementation Organization  [e.g., "xemistry.com"] -->
<!ELEMENT PC-Urn_source (#PCDATA)>

<!-- NCBI Implementation Release  [e.g., "10.25.2005"] -->
<!ELEMENT PC-Urn_release (#PCDATA)>

<!--
 URN Data Type
   Provides the ability to use more specific data types than that directly provided by ASN.1.
   Provides for more specific validation of specified data.
-->
<!ELEMENT PC-UrnDataType (%INTEGER;)>

<!--
    string	-  Basic Data Types
         String                             [maps to a VisibleString]
    stringlist	-  List of Strings                    [maps to VisibleString list]
    int	-  32-Bit Signed Integer              [maps to an INTEGER]
    intvec	-  Vector of 32-Bit Signed Integer    [maps to INTEGER vector]
    uint	-  32-Bit Unsigned Integer            [maps to an INTEGER]
    uintvec	-  Vector of 32-Bit Unsigned Integer  [maps to INTEGER vector]
    double	-  64-Bit Float                       [maps to a REAL]
    doublevec	-  Vector of Double                   [maps to REAL vector]
    bool	-  Boolean or Binary value            [maps to a BOOLEAN]
    boolvec	-  Boolean Vector                     [maps to BOOLEAN vector]
    uint64	-  Specialized Data Types
         64-Bit Unsigned Integer (Hex form) [maps to a VisibleString]
    binary	-  Binary Data Blob                   [maps to an OCTET STRING]
    url	-  URL                                [maps to a VisibleString]
    unicode	-  UniCode String                     [maps to a VisibleString]
    date	-  ISO8601 Date                       [maps to a Date]
    fingerprint	-  Binary Fingerprint (Gzip'ped bit   [maps to an OCTET STRING]
           list w/ 4-Byte prefix denoting bit list length)
    unknown	-  Unknown Data Type               [maps to a set of VisibleString]
-->
<!ATTLIST PC-UrnDataType value (
        string |
        stringlist |
        int |
        intvec |
        uint |
        uintvec |
        double |
        doublevec |
        bool |
        boolvec |
        uint64 |
        binary |
        url |
        unicode |
        date |
        fingerprint |
        unknown
        ) #IMPLIED >


<!-- Coordinates for the Compound of a given type -->
<!ELEMENT PC-Coordinates (
        PC-Coordinates_type, 
        PC-Coordinates_aid, 
        PC-Coordinates_conformers?, 
        PC-Coordinates_atomlabels?, 
        PC-Coordinates_data?)>

<!-- Coordinate Type Information (vector) -->
<!ELEMENT PC-Coordinates_type (PC-CoordinateType*)>

<!--
 Conformer Atom IDs (vector)
   (to be kept synchronized with Conformers)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-Coordinates_aid (PC-Coordinates_aid_E*)>


<!ELEMENT PC-Coordinates_aid_E (%INTEGER;)>

<!-- Conformers for this Coordinate Set -->
<!ELEMENT PC-Coordinates_conformers (PC-Conformer*)>

<!-- Atom labels for Conformer Set -->
<!ELEMENT PC-Coordinates_atomlabels (PC-AtomString*)>

<!-- Data Associated with these Coordinates -->
<!ELEMENT PC-Coordinates_data (PC-InfoData*)>

<!--
 Drawing/Conformer Definition (in Parallel Arrays, synchronized to aid integer list)
   3D coordinates are specified in a right-handed coordinate system. For 2D plots, Y axis leads upwards.
-->
<!ELEMENT PC-Conformer (
        PC-Conformer_x, 
        PC-Conformer_y, 
        PC-Conformer_z?, 
        PC-Conformer_style?, 
        PC-Conformer_data?)>

<!--
  [Note: Parallel Arrays must be kept Synchronized]
 X Coordinates (vector)
-->
<!ELEMENT PC-Conformer_x (PC-Conformer_x_E*)>


<!ELEMENT PC-Conformer_x_E (%REAL;)>

<!-- Y Coordinates (vector) -->
<!ELEMENT PC-Conformer_y (PC-Conformer_y_E*)>


<!ELEMENT PC-Conformer_y_E (%REAL;)>

<!-- Z Coordinates (vector) -->
<!ELEMENT PC-Conformer_z (PC-Conformer_z_E*)>


<!ELEMENT PC-Conformer_z_E (%REAL;)>

<!-- Structure Annotations -->
<!ELEMENT PC-Conformer_style (PC-DrawAnnotations)>

<!-- Data Associated with this Conformer -->
<!ELEMENT PC-Conformer_data (PC-InfoData*)>

<!-- Holder for groups of Conformers -->
<!ELEMENT PC-Conformers (PC-Conformer*)>

<!-- Coordinate Set Type Distinctions -->
<!ELEMENT PC-CoordinateType (%INTEGER;)>

<!--
    twod	-  2D Coordinates
    threed	-  3D Coordinates (should also indicate units, below)
    submitted	-  Depositor Provided Coordinates
    experimental	-  Experimentally Determined Coordinates
    computed	-  Computed Coordinates
    standardized	-  Standardized Coordinates
    augmented	-  Hybrid Original with Computed Coordinates (e.g., explicit H)
    aligned	-  Template used to align drawing
    compact	-  Drawing uses shorthand forms (e.g., COOH, OCH3, Et, etc.)
    units-angstroms	-  (3D) Coordinate units are Angstroms
    units-nanometers	-  (3D) Coordinate units are nanometers
    units-pixel	-  (2D) Coordinate units are pixels
    units-points	-  (2D) Coordinate units are points
    units-stdbonds	-  (2D) Coordinate units are standard bond lengths (1.0)
    units-unknown	-  Coordinate units are unknown or unspecified
-->
<!ATTLIST PC-CoordinateType value (
        twod |
        threed |
        submitted |
        experimental |
        computed |
        standardized |
        augmented |
        aligned |
        compact |
        units-angstroms |
        units-nanometers |
        units-pixel |
        units-points |
        units-stdbonds |
        units-unknown
        ) #IMPLIED >


<!--
 Drawing Annotations (in Parallel Arrays)
    [Note: A pair of atoms can have multiple annotations]
-->
<!ELEMENT PC-DrawAnnotations (
        PC-DrawAnnotations_annotation, 
        PC-DrawAnnotations_aid1, 
        PC-DrawAnnotations_aid2)>

<!--
  [Note: Parallel Arrays must be kept Synchronized]
 Bond Annotations (vector)
-->
<!ELEMENT PC-DrawAnnotations_annotation (PC-BondAnnotation*)>

<!--
 Atom1 Identifier (vector)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-DrawAnnotations_aid1 (PC-DrawAnnotations_aid1_E*)>


<!ELEMENT PC-DrawAnnotations_aid1_E (%INTEGER;)>

<!--
 Atom2 Identifier (vector)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-DrawAnnotations_aid2 (PC-DrawAnnotations_aid2_E*)>


<!ELEMENT PC-DrawAnnotations_aid2_E (%INTEGER;)>

<!-- Atom-Atom Annotation Information -->
<!ELEMENT PC-BondAnnotation (%INTEGER;)>

<!--
    crossed	-  Double Bond that can be both Cis/Trans
    dashed	-  Hydrogen-Bond (3D Only?)
    wavy	-  Unknown Stereochemistry
    dotted	-  Complex/Fractional
    wedge-up	-  Above-Plane
    wedge-down	-  Below-Plane
    arrow	-  Dative
    aromatic	-  Aromatic
    resonance	-  Resonance
    bold	-  Fat Bond (Non-Specific User Interpreted Information)
    fischer	-  Interpret Bond Stereo using Fischer Conventions
    closeContact	-  Identification of Atom-Atom Close Contacts (3D Only)
    unknown	-  Unspecified or Unknown Atom-Atom Annotation
-->
<!ATTLIST PC-BondAnnotation value (
        crossed |
        dashed |
        wavy |
        dotted |
        wedge-up |
        wedge-down |
        arrow |
        aromatic |
        resonance |
        bold |
        fischer |
        closeContact |
        unknown
        ) #IMPLIED >


<!-- Atom Information  (in Parallel Arrays) -->
<!ELEMENT PC-Atoms (
        PC-Atoms_aid, 
        PC-Atoms_element, 
        PC-Atoms_label?, 
        PC-Atoms_isotope?, 
        PC-Atoms_charge?, 
        PC-Atoms_radical?, 
        PC-Atoms_source?, 
        PC-Atoms_comment?)>

<!--
  [Note: Parallel Arrays must be kept Synchronized]
 Atom Identifiers (vector)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-Atoms_aid (PC-Atoms_aid_E*)>


<!ELEMENT PC-Atoms_aid_E (%INTEGER;)>

<!-- Atomic Numbers (vector) -->
<!ELEMENT PC-Atoms_element (PC-Element*)>

<!--
 Independent Arrays of ID-Value Pairs  (Technically allows multiple values per Atom)
 Atom labels
-->
<!ELEMENT PC-Atoms_label (PC-AtomString*)>

<!-- Isotopic Information -->
<!ELEMENT PC-Atoms_isotope (PC-AtomInt*)>

<!-- Formal Charges -->
<!ELEMENT PC-Atoms_charge (PC-AtomInt*)>

<!-- Radical Information -->
<!ELEMENT PC-Atoms_radical (PC-AtomRadical*)>

<!-- E.g. identity of MMDB "R" groups -->
<!ELEMENT PC-Atoms_source (PC-AtomSource*)>

<!-- Atom Comments -->
<!ELEMENT PC-Atoms_comment (PC-AtomString*)>

<!-- Specification of an Association between an Atom Identifier and Source -->
<!ELEMENT PC-AtomSource (
        PC-AtomSource_aid, 
        PC-AtomSource_source)>

<!--
 Atom Identifier for the R-Group Source
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-AtomSource_aid (%INTEGER;)>

<!-- Atom Specific MMDB Record -->
<!ELEMENT PC-AtomSource_source (PC-MMDBSource)>

<!-- Specification of an Association between an Atom Identifier and an Integer Value -->
<!ELEMENT PC-AtomInt (
        PC-AtomInt_aid, 
        PC-AtomInt_value)>

<!--
 Atom Identifier for the Value
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-AtomInt_aid (%INTEGER;)>

<!-- Value Associated to the ID -->
<!ELEMENT PC-AtomInt_value (%INTEGER;)>

<!-- Specification of an Association between an Atom Identifier and a String Value -->
<!ELEMENT PC-AtomString (
        PC-AtomString_aid, 
        PC-AtomString_value)>

<!--
 Atom Identifier for the Value
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-AtomString_aid (%INTEGER;)>

<!-- Value Associated to the ID -->
<!ELEMENT PC-AtomString_value (#PCDATA)>

<!-- Rudimentary Atom Electronic Configuration Designation -->
<!ELEMENT PC-AtomRadical (
        PC-AtomRadical_aid, 
        PC-AtomRadical_type)>

<!--
 Atom Identifier for the Value
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-AtomRadical_aid (%INTEGER;)>
<!-- Type of Atom Radical -->
<!ELEMENT PC-AtomRadical_type (%INTEGER;)>

<!--
    singlet	-  Open-Shell Singlet
    doublet	-  Open-Shell Doublet
    triplet	-  Open-Shell Triplet
    quartet	-  Open-Shell Quartet
    quintet	-  Open-Shell Quintet
    hextet	-  Open-Shell Hextet
    heptet	-  Open-Shell Quintet
    octet	-  Open-Shell Octet
    none	-  Closed-Shell Singlet
-->
<!ATTLIST PC-AtomRadical_type value (
        singlet |
        doublet |
        triplet |
        quartet |
        quintet |
        hextet |
        heptet |
        octet |
        none
        ) #IMPLIED >


<!-- Element Information [which may contain "illegal" element values] -->
<!ELEMENT PC-Element (%INTEGER;)>

<!--
    a	-  Illegal Atom Numbers that may be Interpreted to be something else
         Unspecified Atom (Asterick)
    d	-  Dummy Atom
    r	-  Rgroup Label
    lp	-  Lone Pair
    h	-  Elements
-->
<!ATTLIST PC-Element value (
        a |
        d |
        r |
        lp |
        h |
        he |
        li |
        be |
        b |
        c |
        n |
        o |
        f |
        ne |
        na |
        mg |
        al |
        si |
        p |
        s |
        cl |
        ar |
        k |
        ca |
        sc |
        ti |
        v |
        cr |
        mn |
        fe |
        co |
        ni |
        cu |
        zn |
        ga |
        ge |
        as |
        se |
        br |
        kr |
        rb |
        sr |
        y |
        zr |
        nb |
        mo |
        tc |
        ru |
        rh |
        pd |
        ag |
        cd |
        in |
        sn |
        sb |
        te |
        i |
        xe |
        cs |
        ba |
        la |
        ce |
        pr |
        nd |
        pm |
        sm |
        eu |
        gd |
        tb |
        dy |
        ho |
        er |
        tm |
        yb |
        lu |
        hf |
        ta |
        w |
        re |
        os |
        ir |
        pt |
        au |
        hg |
        tl |
        pb |
        bi |
        po |
        at |
        rn |
        fr |
        ra |
        ac |
        th |
        pa |
        u |
        np |
        pu |
        am |
        cm |
        bk |
        cf |
        es |
        fm |
        md |
        no |
        lr |
        rf |
        db |
        sg |
        bh |
        hs |
        mt |
        ds |
        rg
        ) #IMPLIED >


<!-- Bond Description Information  (in Parallel Arrays) -->
<!ELEMENT PC-Bonds (
        PC-Bonds_aid1, 
        PC-Bonds_aid2, 
        PC-Bonds_order)>

<!--
  [Note: Parallel Arrays must be kept Synchronized]
 Atom1 Identifier (vector)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-Bonds_aid1 (PC-Bonds_aid1_E*)>


<!ELEMENT PC-Bonds_aid1_E (%INTEGER;)>

<!--
 Atom2 Identifier (vector)
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-Bonds_aid2 (PC-Bonds_aid2_E*)>


<!ELEMENT PC-Bonds_aid2_E (%INTEGER;)>

<!-- Bond Type Information (vector) -->
<!ELEMENT PC-Bonds_order (PC-BondType*)>

<!-- Bond Type Information -->
<!ELEMENT PC-BondType (%INTEGER;)>

<!--
    single	-  Single Bond
    double	-  Double Bond
    triple	-  Triple Bond
    quadruple	-  Quadruple Bond
    dative	-  Dative Bond
    complex	-  Complex Bond
    ionic	-  Ionic Bond
    unknown	-  Unknown/Unspecified Connectivity
-->
<!ATTLIST PC-BondType value (
        single |
        double |
        triple |
        quadruple |
        dative |
        complex |
        ionic |
        unknown
        ) #IMPLIED >


<!--
 Allowed Stereogenic Center Types
   [Using IUPAC Stereogenic Center recommendations and terminology]
-->
<!ELEMENT PC-StereoCenter (
        PC-StereoCenter_tetrahedral | 
        PC-StereoCenter_planar | 
        PC-StereoCenter_squareplanar | 
        PC-StereoCenter_octahedral | 
        PC-StereoCenter_bipyramid | 
        PC-StereoCenter_tshape | 
        PC-StereoCenter_pentagonal)>

<!-- Tetrahedral (SP3) StereoCenter -->
<!ELEMENT PC-StereoCenter_tetrahedral (PC-StereoTetrahedral)>

<!-- Planar (SP2) StereoCenter -->
<!ELEMENT PC-StereoCenter_planar (PC-StereoPlanar)>

<!-- Square Planar (SP4) StereoCenter -->
<!ELEMENT PC-StereoCenter_squareplanar (PC-StereoSquarePlanar)>

<!-- Octahedral (OC-6) / Square Pyramid (SPY-5) StereoCenters -->
<!ELEMENT PC-StereoCenter_octahedral (PC-StereoOctahedral)>

<!-- Trigonal BiPyramid (TBPY-4 and TBPY-5) StereoCenters -->
<!ELEMENT PC-StereoCenter_bipyramid (PC-StereoTrigonalBiPyramid)>

<!-- T-Shaped (TS-3) StereoCenters -->
<!ELEMENT PC-StereoCenter_tshape (PC-StereoTShape)>

<!-- Pentagonal BiPyramid (PBPY-7) StereoCenters -->
<!ELEMENT PC-StereoCenter_pentagonal (PC-StereoPentagonalBiPyramid)>

<!--
 SP3 Tetrahedral StereoCenter, Trigonal Pyramid Stereogenic Center,
   Cumulenic StereoCenter (Linear systems of an even number of double bonds),
   or Hindered biaryl stereocenter (All biaryls have hindered rotation that
   to some extent the ortho-hydrogens prevent coplanarity)
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoTetrahedral (
        PC-StereoTetrahedral_center, 
        PC-StereoTetrahedral_above, 
        PC-StereoTetrahedral_top, 
        PC-StereoTetrahedral_bottom, 
        PC-StereoTetrahedral_below, 
        PC-StereoTetrahedral_parity?, 
        PC-StereoTetrahedral_type?)>

<!--
 Atom Identifier of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTetrahedral_center (%INTEGER;)>

<!--
 Atom Identifier of Atom Above the Plane
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTetrahedral_above (%INTEGER;)>

<!--
 Atom Identifier of Atom In-Plane and at the Top
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTetrahedral_top (%INTEGER;)>

<!--
 Atom Identifier of Atom In-Plane and at the Bottom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTetrahedral_bottom (%INTEGER;)>

<!--
 Atom Identifier of Atom Below the Plane
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTetrahedral_below (%INTEGER;)>
<!-- StereoCenter Designation -->
<!ELEMENT PC-StereoTetrahedral_parity (%INTEGER;)>
<!ATTLIST PC-StereoTetrahedral_parity value (
        clockwise |
        counterclockwise |
        any |
        unknown
        ) #IMPLIED >

<!-- Type of StereoCenter, Tetrahedral, if not specified -->
<!ELEMENT PC-StereoTetrahedral_type (%INTEGER;)>

<!--
    tetrahedral	-  Tetrahedral StereoCenter
    cumulenic	-  Cumulenic StereoCenter
    biaryl	-  Biaryl StereoCenter
-->
<!ATTLIST PC-StereoTetrahedral_type value (
        tetrahedral |
        cumulenic |
        biaryl
        ) #IMPLIED >


<!--
 SP2 Planar Stereogenic Center, Cumulenic StereoCenter (Linear systems on an odd
   number of double bonds present planar stereochemistry)
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoPlanar (
        PC-StereoPlanar_left, 
        PC-StereoPlanar_ltop, 
        PC-StereoPlanar_lbottom, 
        PC-StereoPlanar_right, 
        PC-StereoPlanar_rtop, 
        PC-StereoPlanar_rbottom, 
        PC-StereoPlanar_parity?, 
        PC-StereoPlanar_type?)>

<!--
 Atom ID of Left Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_left (%INTEGER;)>

<!--
 Atom ID of Top Atom attached to the Left Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_ltop (%INTEGER;)>

<!--
 Atom ID of Bottom Atom attached to the Left Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_lbottom (%INTEGER;)>

<!--
 Atom ID of Right Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_right (%INTEGER;)>

<!--
 Atom ID of Top Atom attached to the Right Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_rtop (%INTEGER;)>

<!--
 Atom ID of Bottom Atom attached to the Right Double Bond Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPlanar_rbottom (%INTEGER;)>
<!-- StereoCenter Designation -->
<!ELEMENT PC-StereoPlanar_parity (%INTEGER;)>
<!ATTLIST PC-StereoPlanar_parity value (
        same |
        opposite |
        any |
        unknown
        ) #IMPLIED >

<!-- Type of StereoCenter, SP2 Planar, if not specified -->
<!ELEMENT PC-StereoPlanar_type (%INTEGER;)>

<!--
    planar	-  SP2 Planar StereoCenter
    cumulenic	-  Cumulenic StereoCenter
-->
<!ATTLIST PC-StereoPlanar_type value (
        planar |
        cumulenic
        ) #IMPLIED >


<!--
 Square Planar (SP4) StereoCenters
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoSquarePlanar (
        PC-StereoSquarePlanar_center, 
        PC-StereoSquarePlanar_lbelow, 
        PC-StereoSquarePlanar_rbelow, 
        PC-StereoSquarePlanar_labove, 
        PC-StereoSquarePlanar_rabove, 
        PC-StereoSquarePlanar_parity?)>

<!--
 Atom ID of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoSquarePlanar_center (%INTEGER;)>

<!--
 Atom ID of Left Below Plane Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoSquarePlanar_lbelow (%INTEGER;)>

<!--
 Atom ID of Right Below Plane Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoSquarePlanar_rbelow (%INTEGER;)>

<!--
 Atom ID of Left Above Plane Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoSquarePlanar_labove (%INTEGER;)>

<!--
 Atom ID of Right Above Plane Atom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoSquarePlanar_rabove (%INTEGER;)>
<!-- StereoCenter Type -->
<!ELEMENT PC-StereoSquarePlanar_parity (%INTEGER;)>

<!--
    u-shape	-    U shaped isomer (labove-lbelow-rbelow-rabove)
    z-shape	-    Z shaped isomer (labove-rabove-lbelow-rbelow)
    x-shape	-    X shaped isomer (labove-rbelow-rabove-lbelow)
    any	-    Nonspecific mixture of isomers
-->
<!ATTLIST PC-StereoSquarePlanar_parity value (
        u-shape |
        z-shape |
        x-shape |
        any |
        unknown
        ) #IMPLIED >


<!--
 Octahedral (OC-6) and Square Pyramid (SPY-5) StereoCenters
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoOctahedral (
        PC-StereoOctahedral_center, 
        PC-StereoOctahedral_top, 
        PC-StereoOctahedral_bottom, 
        PC-StereoOctahedral_labove, 
        PC-StereoOctahedral_lbelow, 
        PC-StereoOctahedral_rabove, 
        PC-StereoOctahedral_rbelow)>

<!--
 Atom ID of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_center (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Top
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_top (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Bottom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_bottom (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane on the Left
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_labove (%INTEGER;)>

<!--
 Atom ID of Atom Below the Plane on the Left
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_lbelow (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane on the Right
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_rabove (%INTEGER;)>

<!--
 Atom ID of Atom Below the Plane on the Right
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoOctahedral_rbelow (%INTEGER;)>

<!--
 Trigonal BiPyramid (TBPY-4 and TBPY-5) StereoCenters
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoTrigonalBiPyramid (
        PC-StereoTrigonalBiPyramid_center, 
        PC-StereoTrigonalBiPyramid_above, 
        PC-StereoTrigonalBiPyramid_below, 
        PC-StereoTrigonalBiPyramid_top, 
        PC-StereoTrigonalBiPyramid_bottom, 
        PC-StereoTrigonalBiPyramid_right)>

<!--
 Atom ID of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_center (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_above (%INTEGER;)>

<!--
 Atom ID of Atom Below the Plane
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_below (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Top
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_top (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Bottom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_bottom (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and to the Right
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTrigonalBiPyramid_right (%INTEGER;)>

<!--
 T-Shaped (TS-3) StereoCenters
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoTShape (
        PC-StereoTShape_center, 
        PC-StereoTShape_top, 
        PC-StereoTShape_bottom, 
        PC-StereoTShape_above)>

<!--
 Atom ID of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTShape_center (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Top
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTShape_top (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Bottom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTShape_bottom (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoTShape_above (%INTEGER;)>

<!--
 Pentagonal BiPyramid (PBPY-7) StereoCenters
   [Using IUPAC Stereogenic Center recommendations and terminology]
   [Note: "-1" can be used for the Atom Identifier to represent a lone-pair or implicit hydrogen]
-->
<!ELEMENT PC-StereoPentagonalBiPyramid (
        PC-StereoPentagonalBiPyramid_center, 
        PC-StereoPentagonalBiPyramid_top, 
        PC-StereoPentagonalBiPyramid_bottom, 
        PC-StereoPentagonalBiPyramid_left, 
        PC-StereoPentagonalBiPyramid_labove, 
        PC-StereoPentagonalBiPyramid_lbelow, 
        PC-StereoPentagonalBiPyramid_rabove, 
        PC-StereoPentagonalBiPyramid_rbelow)>

<!--
 Atom ID of Atom Center
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_center (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Top
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_top (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Bottom
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_bottom (%INTEGER;)>

<!--
 Atom ID of Atom In-Plane and at the Left
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_left (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane on the Left
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_labove (%INTEGER;)>

<!--
 Atom ID of Atom Below the Plane on the Left
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_lbelow (%INTEGER;)>

<!--
 Atom ID of Atom Above the Plane on the Right
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_rabove (%INTEGER;)>

<!--
 Atom ID of Atom Below the Plane on the Right
   Note: Atom ID's must be greater than "0"
-->
<!ELEMENT PC-StereoPentagonalBiPyramid_rbelow (%INTEGER;)>