RESIDUE 4OC 41 CONECT P 4 OP1 OP2 O5' OP3 CONECT OP1 1 P CONECT OP2 2 P HOP2 CONECT O5' 2 P C5' CONECT CM2 4 O2' HM21 HM22 HM23 CONECT C5' 4 O5' C4' H5' H5'' CONECT C4' 4 C5' O4' C3' H4' CONECT O4' 2 C4' C1' CONECT C3' 4 C4' C2' O3' H3' CONECT C2' 4 C3' O2' C1' H2' CONECT O2' 2 CM2 C2' CONECT C1' 4 O4' C2' N1 H1' CONECT N1 3 C1' C2 C6 CONECT C2 3 N1 O2 N3 CONECT O2 1 C2 CONECT N3 2 C2 C4 CONECT C4 3 N3 N4 C5 CONECT N4 3 C4 CM4 HN4 CONECT C5 3 C4 C6 H5 CONECT C6 3 N1 C5 H6 CONECT CM4 4 N4 HM41 HM42 HM43 CONECT O3' 2 C3' HO3' CONECT OP3 2 P HOP3 CONECT HM41 1 CM4 CONECT HM42 1 CM4 CONECT HM43 1 CM4 CONECT HN4 1 N4 CONECT H5 1 C5 CONECT H6 1 C6 CONECT H1' 1 C1' CONECT H4' 1 C4' CONECT H5' 1 C5' CONECT H5'' 1 C5' CONECT HOP3 1 OP3 CONECT H3' 1 C3' CONECT HO3' 1 O3' CONECT H2' 1 C2' CONECT HM21 1 CM2 CONECT HM22 1 CM2 CONECT HM23 1 CM2 CONECT HOP2 1 OP2 END HET 4OC 41 HETNAM 4OC 4N,O2'-METHYLCYTIDINE-5'-MONOPHOSPHATE FORMUL 4OC C11 H18 N3 O8 P1