Table 4: _pdbx_chem_comp_descriptor category
_pdbx_chem_comp_descriptor.comp_id	This data item is a pointer to _chem_comp.id in the CHEM_COMP category.	text
_pdbx_chem_comp_descriptor.type	The type of the program or library used to compute the descriptor.	text
_pdbx_chem_comp_descriptor.program	The name of the program or library used to compute the descriptor.	text
_pdbx_chem_comp_descriptor.program_version	The version of the program or library used to compute the descriptor.	version number
_pdbx_chem_comp_descriptor.descriptor	The chemical descriptor value for this component.	code