18852-18-1 1H-1,3,4-BENZOTRIAZEPIN-2,5-DIONE, 2,3,4,5-TETRAHYDRO-3-BENZYL- 1H-1,3,4-Benzotriazepine-2,5-dione, 3,4-dihydro-3-benzyl- 3-Benzyl-3,4-dihydro-1H-1,3,4-benzotriazepine-2,5-dione