RESIDUE V5B 10 CONECT C6 4 O7 H1 H2 H3 CONECT O7 2 C6 S13 CONECT S13 4 O7 O14 O15 O16 CONECT O14 1 S13 CONECT O15 1 S13 CONECT O16 2 S13 H4 CONECT H1 1 C6 CONECT H2 1 C6 CONECT H3 1 C6 CONECT H4 1 O16 END HET V5B 10 HETNAM V5B methyl sulfate FORMUL V5B C1 H4 O4 S1