RESIDUE VXN 16 CONECT C5 3 C4 C S CONECT C3 3 C4 C2 H1 CONECT C1 3 C2 C H2 CONECT C4 3 C5 C3 H3 CONECT C2 3 C3 C1 CL CONECT C 3 C5 C1 H4 CONECT O 1 S CONECT O1 1 S CONECT O2 2 S H5 CONECT S 4 C5 O O1 O2 CONECT CL 1 C2 CONECT H1 1 C3 CONECT H2 1 C1 CONECT H3 1 C4 CONECT H4 1 C CONECT H5 1 O2 END HET VXN 16 HETNAM VXN 4-chloranylbenzenesulfonic acid FORMUL VXN C6 H5 Cl O3 S