ethyl (2Z)-2-(acetylimino)-1-cyclohexyl-5-oxo-1,5-dihydro-2H-dipyrido(1,2- a:2',3'- d)pyrimidine-3-carboxylate
ethyl (2z)-2-(acetylimino)-1-cyclohexyl-5-oxo-1,5-dihydro-2h-dipyrido(1,2- a:2',3'- d)pyrimidine-3-carboxylate