RESIDUE 4DU 37 CONECT OP2 1 P CONECT P 4 OP2 OP1 O5' O1 CONECT OP1 2 P H1T CONECT O5' 2 P C5' CONECT C5' 4 O5' C4' H2 H3 CONECT C4' 4 C5' C3' O4' H4 CONECT C3' 4 C4' O3' C2' H5 CONECT O3' 2 C3' H6 CONECT C2' 4 C3' C1' H7 H8 CONECT C1' 4 C2' O4' N9 H9 CONECT O4' 2 C4' C1' CONECT N9 3 C1' C4 C8 CONECT C4 3 N9 C3 C5 CONECT C3 3 C4 C2 H10 CONECT C2 3 C3 N1 H11 CONECT N1 2 C2 C6 CONECT C6 3 N1 N6 C5 CONECT N6 3 C6 H12 H13 CONECT C5 3 C4 C6 N7 CONECT N7 2 C5 C8 CONECT C8 3 N9 N7 H14 CONECT O1 2 P H15 CONECT H1T 1 OP1 CONECT H2 1 C5' CONECT H3 1 C5' CONECT H4 1 C4' CONECT H5 1 C3' CONECT H6 1 O3' CONECT H7 1 C2' CONECT H8 1 C2' CONECT H9 1 C1' CONECT H10 1 C3 CONECT H11 1 C2 CONECT H12 1 N6 CONECT H13 1 N6 CONECT H14 1 C8 CONECT H15 1 O1 END HET 4DU 37 HETNAM 4DU 1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl) HETNAM 2 4DU -1H-imidazo[4,5-c]pyridin-4-amine FORMUL 4DU C11 H15 N4 O6 P1