RESIDUE AKG 16 CONECT C1 3 C2 O1 O2 CONECT O1 1 C1 CONECT O2 2 C1 HO2 CONECT C2 3 C1 C3 O5 CONECT O5 1 C2 CONECT C3 4 C2 C4 1H3 2H3 CONECT C4 4 C3 C5 1H4 2H4 CONECT C5 3 C4 O3 O4 CONECT O3 1 C5 CONECT O4 2 C5 HO4 CONECT HO2 1 O2 CONECT 1H3 1 C3 CONECT 2H3 1 C3 CONECT 1H4 1 C4 CONECT 2H4 1 C4 CONECT HO4 1 O4 END HET AKG 16 HETNAM AKG 2-OXYGLUTARIC ACID FORMUL AKG C5 H6 O5