5-methyl-7-phenyl-3,7-dihydro-1h-[1,2,4]triazepino[6,5-c]quinoline-2,6-dione (en)1h-[1,2,4]triazepino[6,5-c]quinoline-2,6-dione, 3,7-dihydro-5-methyl-7-phenyl- (en)