1 HK8 (3-chloro-11-oxo-10,11-dihydro-5h-dibenzo[B,E][1,4]diazepin-8-yl)acetic acid 1.000 2 HK6 8-chloro-5,10-dihydro-11h-dibenzo[B,E][1,4]diazepin-11-one 0.727