RESIDUE 5FD 31 CONECT O2' 2 C2' HO2 CONECT C2' 4 O2' C3' C1' H2' CONECT C3' 4 C2' O3' C4' H3'' CONECT O3' 2 C3' HO3 CONECT C4' 4 C3' C5' O4' H4' CONECT C5' 4 C4' F19 H5'1 H5'2 CONECT F19 1 C5' CONECT O4' 2 C4' C1' CONECT C1' 4 C2' O4' N9 H1' CONECT N9 3 C1' C8 C4 CONECT C8 3 N9 N7 HC8 CONECT N7 2 C8 C5 CONECT C5 3 N7 C4 C6 CONECT C4 3 N9 C5 N3 CONECT N3 2 C4 C2 CONECT C2 3 N3 N1 HC2 CONECT N1 2 C2 C6 CONECT C6 3 C5 N1 N6 CONECT N6 3 C6 HN2 H1 CONECT HO2 1 O2' CONECT H2' 1 C2' CONECT H3'' 1 C3' CONECT HO3 1 O3' CONECT H4' 1 C4' CONECT H5'1 1 C5' CONECT H5'2 1 C5' CONECT H1' 1 C1' CONECT HC8 1 C8 CONECT HC2 1 C2 CONECT HN2 1 N6 CONECT H1 1 N6 END HET 5FD 31 HETNAM 5FD 5'-FLUORO-5'-DEOXYADENOSINE FORMUL 5FD C10 H12 F1 N5 O3