1-methyl-5-phenyl-1,5-benzodiazepine-2,4-dione; 1-Methyl-5-phenyl-1H-benzo[b][1,4]diazepine-2,4(3H,5H)-dione; 1-Methyl-5-phenyl-1,5-dihydro-3H-1,5-benzodiazepine-2,4-dione