9-Nitro-1,2,3,4-tetrahydrobenzo[e][1,4]diazepin-5-one;9-Nitro-1,2,3,4-tetrahydro-5H-1,4-benzodiazepin-5-one;9-Nitro-3,4-dihydro-1H-benzo[e][1,4]diazepin-5(2H)-one;
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