57435-88-8 NSC290941 Pyrrolo[3,4-e]-1,4-diazepin-2(1H)-one, 8-ethyl-3,7-dihydro-6,7-dimethyl-5-phenyl- Pyrrolo[3,4-e][1,4]diazepin-2(1H)-one, 3,7-dihydro-6,7-dimethyl-8-ethyl-5-phenyl-