RESIDUE 3RN 16 CONECT C1 3 O1 C2 C5 CONECT O1 1 C1 CONECT C2 3 C1 C3 C6 CONECT O2 2 C6 HO2 CONECT C3 3 C2 C4 H3 CONECT C4 4 C3 C5 H4 H7 CONECT C5 4 C1 C4 H5 H8 CONECT C6 4 C2 O2 H6 H6A CONECT HO2 1 O2 CONECT H3 1 C3 CONECT H4 1 C4 CONECT H5 1 C5 CONECT H6 1 C6 CONECT H6A 1 C6 CONECT H7 1 C4 CONECT H8 1 C5 END HET 3RN 16 HETNAM 3RN 2-(hydroxymethyl)cyclopent-2-en-1-one FORMUL 3RN C6 H8 O2