RESIDUE D0U 18 CONECT O2 2 C7 H1 CONECT C7 3 O2 O1 C3 CONECT O1 1 C7 CONECT C3 3 C7 C2 C4 CONECT C2 3 C3 C1 H2 CONECT C4 3 C3 S1 C5 CONECT S1 2 C4 H3 CONECT C5 3 C4 C6 H4 CONECT C6 3 C5 N1 C1 CONECT N1 3 C6 H5 H6 CONECT C1 3 C2 C6 H7 CONECT H1 1 O2 CONECT H2 1 C2 CONECT H3 1 S1 CONECT H4 1 C5 CONECT H5 1 N1 CONECT H6 1 N1 CONECT H7 1 C1 END HET D0U 18 HETNAM D0U 4-azanyl-2-sulfanyl-benzoic acid FORMUL D0U C7 H7 N1 O2 S1