1-(2-Nitrophenyl)-4-((3,4,5-trimethoxyphenyl)methyl)piperazine monohydrochloride 80305-17-5 N-(3,4,5-Trimethoxybenzyl)-N'-(2-nitrophenyl)piperazine hydrochloride Piperazine, 1-(2-nitrophenyl)-4-((3,4,5-trimethoxyphenyl)methyl)-, monohydrochloride