1-((4-Methoxyphenoxy)carbonylmethyl)-4-(2,3,4-trimethoxybenzyl)piperazine dihydrochloride 1-Piperazineacetic acid, 4-((2,3,4-trimethoxyphenyl)methyl)-, 4-methoxyphenyl ester, dihydrochloride 113594-65-3