97181-31-2 E-1-(3,4-Dioxymethylenecinnamoyl)-4-(2-pyrrolidinocarbonylethyl)piperazine hydrochloride Piperazine, 1-(3-(1,3-benzodioxol-5-yl)-1-oxo-2-propenyl)-4-(3-oxo-3-(1-pyrrolidinyl)propyl)-,monohydrochloride, (E)-