1-(3,4,5-Trimethoxybenzyl)-4-((4-methoxyphenyl)oxycarbonylmethyl)piperazine 1-Piperazineacetic acid, 4-((3,4,5-trimethoxyphenyl)methyl)-, 4-methoxyphenyl ester, (E)-2-butenedioate (1:1) 129200-10-8 4-Methoxyphenyl 4-((3,4,5-trimethoxyphenyl)methyl)-1-piperazineacetate (E)-2-butenedioate (1:1) KB 5492 KB-5492