RESIDUE 7AP 29 CONECT N1 2 C2 C8A CONECT C2 3 N1 N2 N3 CONECT N2 3 C2 HN1 HN3 CONECT N3 2 C2 C4 CONECT C4 3 N3 N4 C4A CONECT N4 3 C4 HN2 HN4 CONECT C4A 3 C4 C8A N5 CONECT C8A 3 N1 C4A N8 CONECT N5 2 C4A C6 CONECT C6 3 N5 C7 C1' CONECT C7 3 C6 N8 H77 CONECT N8 2 C8A C7 CONECT C1' 4 C6 O1' C2' H1'' CONECT O1' 2 C1' HO2 CONECT C2' 4 C1' O2' C3' H2'' CONECT O2' 2 C2' HO1 CONECT C3' 4 C2' H3'1 H3'2 H3'3 CONECT H77 1 C7 CONECT H1'' 1 C1' CONECT H2'' 1 C2' CONECT H3'1 1 C3' CONECT H3'2 1 C3' CONECT H3'3 1 C3' CONECT HO1 1 O2' CONECT HO2 1 O1' CONECT HN1 1 N2 CONECT HN2 1 N4 CONECT HN3 1 N2 CONECT HN4 1 N4 END HET 7AP 29 HETSYN 7AP 4-AMINOBIOPTERIN HETNAM 7AP (1S,2S)-1-(2,4-DIAMINOPTERIDIN-6-YL)PROPANE-1,2-DIOL FORMUL 7AP C9 H12 N6 O2