RESIDUE 3DR 23 CONECT O5' 2 P C5' CONECT P 4 O5' OP1 OP2 OP3 CONECT OP1 1 P CONECT OP2 2 P HOP2 CONECT OP3 2 P HOP3 CONECT C2' 4 C1' C3' H2' H2'' CONECT C5' 4 O5' C4' H5' H5'' CONECT C4' 4 C5' O4' C3' H4'1 CONECT O4' 2 C4' C1' CONECT C1' 4 C2' O4' H1'1 H1'2 CONECT C3' 4 C2' C4' O3' H3' CONECT O3' 2 C3' HO3' CONECT HOP2 1 OP2 CONECT HOP3 1 OP3 CONECT H2' 1 C2' CONECT H2'' 1 C2' CONECT H5' 1 C5' CONECT H5'' 1 C5' CONECT H4'1 1 C4' CONECT H1'1 1 C1' CONECT H1'2 1 C1' CONECT H3' 1 C3' CONECT HO3' 1 O3' END HET 3DR 23 HETSYN 3DR ABASIC DIDEOXYRIBOSE HETNAM 3DR 1',2'-DIDEOXYRIBOFURANOSE-5'-PHOSPHATE FORMUL 3DR C5 H11 O6 P1