8-Chloro-5-nitroso-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one; 11H-Dibenzo[b,e][1,4]diazepin-11-one, 8-chloro-5,10-dihydro-5-nitroso; 8-Chloro-5,10-dihydro-5-nitroso-11H-dibenzo[b,e][1,4]diazepin-11-one; 3-chloro-11-nitroso-5H-benzo[b][1,4]benzodiazepin-6-one