RESIDUE 3KN 20 CONECT NAM 3 CAI H1 H2 CONECT CAI 3 NAM CAH CAG CONECT CAH 3 CAI CAL H3 CONECT CAL 3 CAH NAK H4 CONECT NAK 2 CAL CAJ CONECT CAJ 3 NAK CAG H5 CONECT CAG 3 CAI CAJ CAE CONECT CAE 3 CAG SAA NAD CONECT SAA 2 CAE CAB CONECT NAD 2 CAE NAC CONECT NAC 2 NAD CAB CONECT CAB 3 SAA NAC NAF CONECT NAF 3 CAB H6 H7 CONECT H1 1 NAM CONECT H2 1 NAM CONECT H3 1 CAH CONECT H4 1 CAL CONECT H5 1 CAJ CONECT H6 1 NAF CONECT H7 1 NAF END HET 3KN 20 HETNAM 3KN 3-(5-amino-1,3,4-thiadiazol-2-yl)pyridin-4-amine FORMUL 3KN C7 H7 N5 S1