RESIDUE 5IU 33 CONECT N1 3 C2 C6 C1' CONECT C2 3 N1 N3 O2 CONECT N3 3 C2 C4 HN3 CONECT C4 3 N3 C5 O4 CONECT C5 3 C4 C6 I5 CONECT C6 3 N1 C5 H6 CONECT O2 1 C2 CONECT O4 1 C4 CONECT I5 1 C5 CONECT C1' 4 N1 C2' O4' H1' CONECT C2' 4 C1' C3' H2' H2'' CONECT C3' 4 C2' C4' O3' H3' CONECT C4' 4 C3' O4' C5' H4' CONECT O3' 2 C3' HO3' CONECT O4' 2 C1' C4' CONECT C5' 4 C4' O5' H5' H5'' CONECT O5' 2 C5' P CONECT P 4 O5' OP1 OP2 OP3 CONECT OP1 1 P CONECT OP2 2 P HOP2 CONECT OP3 2 P HOP3 CONECT HN3 1 N3 CONECT H6 1 C6 CONECT H1' 1 C1' CONECT H2' 1 C2' CONECT H2'' 1 C2' CONECT H3' 1 C3' CONECT H4' 1 C4' CONECT HO3' 1 O3' CONECT H5' 1 C5' CONECT H5'' 1 C5' CONECT HOP2 1 OP2 CONECT HOP3 1 OP3 END HET 5IU 33 HETNAM 5IU 5-IODO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE FORMUL 5IU C9 H12 I1 N2 O8 P1