RESIDUE 4UO 32 CONECT O6 1 C6 CONECT C6 3 O6 N1 C5 CONECT N1 3 C6 C2 H1 CONECT C2 3 N1 O2 N3 CONECT O2 1 C2 CONECT N3 3 C2 C4 H2 CONECT C4 3 N3 C5 N9 CONECT C5 3 C6 C4 N7 CONECT N7 2 C5 C8 CONECT C8 3 N7 N9 H3 CONECT N9 3 C4 C8 C1' CONECT C1' 4 N9 O4' C2' H4 CONECT O4' 2 C1' C4' CONECT C4' 4 O4' C5' C3' H5 CONECT C5' 4 C4' O5' H6 H7 CONECT O5' 2 C5' H8 CONECT C3' 4 C4' O3' C2' H9 CONECT O3' 2 C3' H10 CONECT C2' 4 C1' C3' O2' H11 CONECT O2' 2 C2' H12 CONECT H1 1 N1 CONECT H2 1 N3 CONECT H3 1 C8 CONECT H4 1 C1' CONECT H5 1 C4' CONECT H6 1 C5' CONECT H7 1 C5' CONECT H8 1 O5' CONECT H9 1 C3' CONECT H10 1 O3' CONECT H11 1 C2' CONECT H12 1 O2' END HET 4UO 32 HETSYN 4UO Xanthosine HETNAM 4UO 2,3-dihydroxanthosine FORMUL 4UO C10 H12 N4 O6