RESIDUE 4KL 22 CONECT OAL 2 CAJ H1 CONECT CAJ 3 OAL CAI CAE CONECT CAI 3 CAJ CAH H2 CONECT CAH 3 CAI CAM NAG CONECT CAM 3 CAH OAN OAO CONECT OAN 2 CAM H3 CONECT OAO 1 CAM CONECT NAG 2 CAH CAD CONECT CAD 3 NAG CAE CAC CONECT CAE 3 CAJ CAD CAF CONECT CAF 3 CAE CAA H4 CONECT CAA 3 CAF CAB H5 CONECT CAB 3 CAA CAC H6 CONECT CAC 3 CAD CAB OAK CONECT OAK 2 CAC H7 CONECT H1 1 OAL CONECT H2 1 CAI CONECT H3 1 OAN CONECT H4 1 CAF CONECT H5 1 CAA CONECT H6 1 CAB CONECT H7 1 OAK END HET 4KL 22 HETSYN 4KL Xanthurenate; 8-Hydroxykynurenic acid; 4,8-Dihydroxyqui HETSYN 2 4KL naldic acid HETNAM 4KL Xanthuric acid FORMUL 4KL C10 H7 N1 O4