3-Nitro-5H,6H,7H-diimidazo(1,2-a;2',1'-c)(1,4)diazepine 57831-73-9 5H,6H,7H-DIIMIDAZO(1,2-a;2',1'-c)(1,4)DIAZEPINE, 3-NITRO- BRN 1130676