57831-77-3 5H,6H,7H-DIIMIDAZO(1,2-a;2',1'-c)(1,4)DIAZEPINE, 6-ACETYLOXY-3-NITRO- 6-Acetyloxy-3-nitro-5H,6H,7H-diimidazo(1,2-a;2',1'-c)(1,4)diazepine BRN 1161158