RESIDUE 4WL 16 CONECT O2 1 C1 CONECT C1 3 O2 O3 C4 CONECT O3 2 C1 H3 CONECT C4 3 C1 C5 N8 CONECT C5 3 C4 C6 H5 CONECT C6 3 C5 C7 S11 CONECT C7 3 C6 N8 C9 CONECT N8 3 C4 C7 H8 CONECT S11 2 C6 C10 CONECT C10 3 S11 C9 H10 CONECT C9 3 C7 C10 H9 CONECT H3 1 O3 CONECT H5 1 C5 CONECT H8 1 N8 CONECT H9 1 C9 CONECT H10 1 C10 END HET 4WL 16 HETNAM 4WL 4H-THIENO[3,2-B]PYROLE-5-CARBOXYLIC ACID FORMUL 4WL C7 H5 N1 O2 S1