InChI=1/C14H13ClN2O3/c1-8-11(14(19)20-2)12(9-4-3-5-16-6-9)10(7-18)13(15)17-8/h3-7,12,17H,1-2H [3,4'-bipyridine]-3'-carboxylic acid, 6'-chloro-5'-formyl-1',4'-dihydro-2'-methyl-, methyl ester methyl 6'-chloro-5'-formyl-2'-methyl-1',4'-dihydro-3,4'-bipyridine-3'-carboxylate