RESIDUE 4BD 48 CONECT PA 4 O1A O2A C3A O5' CONECT O1A 2 PA HO1A CONECT O2A 1 PA CONECT C3A 4 PA F1A F2A PB CONECT F1A 1 C3A CONECT F2A 1 C3A CONECT O5' 2 PA C5' CONECT PB 4 C3A O1B O2B O3B CONECT O1B 1 PB CONECT O2B 2 PB HO2B CONECT O3B 2 PB PG CONECT PG 4 O3B O1G O2G O3G CONECT O1G 2 PG HO1G CONECT O2G 1 PG CONECT O3G 2 PG HO3G CONECT C5' 4 O5' C4' H5' H5'A CONECT C4' 4 C5' O4' C3' H4' CONECT O4' 2 C4' C1' CONECT C1' 4 O4' N1 C2' H1' CONECT N1 3 C1' C6 C2 CONECT C6 3 N1 C5 H6 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 C6 C4 C5M CONECT C5M 4 C5 H5M H5MA H5MB CONECT C2' 4 C1' C3' H2' H2'A CONECT C3' 4 C4' C2' O3' H3' CONECT O3' 2 C3' HO3' CONECT HO1A 1 O1A CONECT HO2B 1 O2B CONECT HO1G 1 O1G CONECT HO3G 1 O3G CONECT H5' 1 C5' CONECT H5'A 1 C5' CONECT H4' 1 C4' CONECT H1' 1 C1' CONECT H6 1 C6 CONECT HN3 1 N3 CONECT H5M 1 C5M CONECT H5MA 1 C5M CONECT H5MB 1 C5M CONECT H2' 1 C2' CONECT H2'A 1 C2' CONECT H3' 1 C3' CONECT HO3' 1 O3' END HET 4BD 48 HETNAM 4BD 5'-O-[(S)-{difluoro[(S)-hydroxy(phosphonooxy)phosphoryl HETNAM 2 4BD ]methyl}(hydroxy)phosphoryl]thymidine FORMUL 4BD C11 H17 F2 N2 O13 P3