RESIDUE 44P 41 CONECT N1 3 C2 C6 C1' CONECT C2 3 N1 O2 N3 CONECT O2 1 C2 CONECT N3 3 C2 C4 HN3 CONECT C4 3 N3 O4 C5 CONECT O4 1 C4 CONECT C5 3 C4 C6 H5 CONECT C6 3 N1 C5 H6 CONECT PA 4 O1A O2A C3A O5' CONECT PB 4 O1B O2B C3A O3B CONECT C1' 4 N1 C2' O4' H1' CONECT O1A 2 PA HO1A CONECT O1B 1 PB CONECT C2' 4 C1' O2' C3' H2' CONECT O2' 2 C2' HO2' CONECT O2A 1 PA CONECT O2B 2 PB HO2B CONECT C3' 4 C2' O3' C4' H3' CONECT O3' 2 C3' HO3' CONECT C3A 4 PA PB H3A H3AA CONECT O3B 2 PB HO3B CONECT C4' 4 C3' O4' C5' H4' CONECT O4' 2 C1' C4' CONECT C5' 4 C4' O5' H5' H5'A CONECT O5' 2 PA C5' CONECT H5 1 C5 CONECT H6 1 C6 CONECT H1' 1 C1' CONECT HO1A 1 O1A CONECT H2' 1 C2' CONECT HO2' 1 O2' CONECT HO2B 1 O2B CONECT H3' 1 C3' CONECT HO3' 1 O3' CONECT H3A 1 C3A CONECT H3AA 1 C3A CONECT HO3B 1 O3B CONECT H4' 1 C4' CONECT H5' 1 C5' CONECT H5'A 1 C5' CONECT HN3 1 N3 END HET 44P 41 HETNAM 44P 5'-O-[(S)-HYDROXY(PHOSPHONOMETHYL)PHOSPHORYL]URIDINE FORMUL 44P C10 H16 N2 O11 P2