loop_ _pdbx_entity_poly_comp_link_list.link_id _pdbx_entity_poly_comp_link_list.entity_id _pdbx_entity_poly_comp_link_list.entity_comp_num_1 _pdbx_entity_poly_comp_link_list.comp_id_1 _pdbx_entity_poly_comp_link_list.atom_id_1 _pdbx_entity_poly_comp_link_list.leaving_atom_id_1 _pdbx_entity_poly_comp_link_list.atom_stereo_config_1 _pdbx_entity_poly_comp_link_list.entity_comp_num_2 _pdbx_entity_poly_comp_link_list.comp_id_2 _pdbx_entity_poly_comp_link_list.atom_id_2 _pdbx_entity_poly_comp_link_list.leaving_atom_id_2 _pdbx_entity_poly_comp_link_list.atom_stereo_config_2 _pdbx_entity_poly_comp_link_list.value_order 1 1 1 . . . . 2 . . . . 'sing'