RESIDUE 4Y3 43 CONECT N1 3 C2 C1' C6 CONECT C2 3 N1 O2 N3 CONECT C4 3 C5 N3 N4 CONECT C5 3 C4 C6 F CONECT PA 4 O5' O1A O2A O3A CONECT PB 4 O1B O2B O3A O3B CONECT PG 4 O1G O2G O3B O3G CONECT C5' 4 O5' C4' H1 H2 CONECT O5' 2 PA C5' CONECT C4' 4 C5' O4' S H3 CONECT O4' 2 C4' C1' CONECT S 4 C4' C2' H4 H5 CONECT C2' 4 S C1' H6 H7 CONECT C1' 4 N1 O4' C2' H8 CONECT O1A 2 PA H9 CONECT O1B 1 PB CONECT O1G 2 PG H10 CONECT O2 1 C2 CONECT O2A 1 PA CONECT O2B 2 PB H11 CONECT O2G 1 PG CONECT N3 2 C2 C4 CONECT O3A 2 PA PB CONECT O3B 2 PB PG CONECT O3G 2 PG H12 CONECT N4 3 C4 H13 H14 CONECT C6 3 N1 C5 H15 CONECT F 1 C5 CONECT H1 1 C5' CONECT H2 1 C5' CONECT H3 1 C4' CONECT H4 1 S CONECT H5 1 S CONECT H6 1 C2' CONECT H7 1 C2' CONECT H8 1 C1' CONECT H9 1 O1A CONECT H10 1 O1G CONECT H11 1 O2B CONECT H12 1 O3G CONECT H13 1 N4 CONECT H14 1 N4 CONECT H15 1 C6 END HET 4Y3 43 HETNAM 4Y3 [[(2~{S},5~{R})-5-(4-azanyl-5-fluoranyl-2-oxidanylidene HETNAM 2 4Y3 -pyrimidin-1-yl)-1,3$l^{4}-oxathiolan-2-yl]methoxy-oxid HETNAM 3 4Y3 anyl-phosphoryl] phosphono hydrogen phosphate FORMUL 4Y3 C8 H15 F N3 O12 P3 S