loop_ _pdbx_chem_comp_depositor_info.ordinal _pdbx_chem_comp_depositor_info.comp_id _pdbx_chem_comp_depositor_info.name _pdbx_chem_comp_depositor_info.formula _pdbx_chem_comp_depositor_info.descriptor _pdbx_chem_comp_depositor_info.descriptor_type _pdbx_chem_comp_depositor_info.alt_comp_id 1 GNC "N-acetyl-beta-D-glucosamine" "C8 H15 N O6" "CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O" SMILES .