(1,4)Diazepino(7,1-a)isoquinoline-2,5-dione, 1,3,4,7,8,12b-hexahydro- 1,3,4,7,8,12b-Hexahydro-(1,4)diazepino(7,1-a)isoquinoline-2,5-dione 133973-18-9 BRN 4812224