2H-Pyrido(2,3-b)(1,4)diazepin-2-one, 1,3,4,5-tetrahydro-4-phenyl- 4-Phenyl-1,3,4,5-tetrahydro-2H-pyrido(2,3-b)(1,4)diazepin-2-one 4-Phenyl-1H-tetrahydro-5-azabenzo-1,5-diazepinone-2 87474-39-3