1H-1,4-Diazepine-5,7(4H,6H)-dione, 2,3-dihydro-6,6-diethyl-1,4-dimethyl- 6,6-Diethyl-1,4-dimethyl-2,3-dihydro-1H-1,4-diazepine-5,7(4H,6H)-dione 95035-87-3