... The acetone filtrates were combined in a simple distillation setup, and the volume of the total solution was reduced 50% by ... s, CH 2 ). Hydrochloride Salt of N-[2-(2-Chlorobenzoyl)-4-nitrophenyl]- 2-{[[[2-(2-chlorobenzoyl)-4-nitrophenyl]carbamoyl]methyl]amino}acetamide (10). ...