1-((4-Methoxyphenoxy)carbonylmethyl)-4-(3,4,5-trimethoxybenzyl)piperazine difumarate hydrate 1-Piperazineacetic acid, 4-((3,4,5-trimethoxyphenyl)methyl)-, 4-methoxyphenyl ester, (E)-2-butenedioate, hydrate (1:2:1) 113594-68-6