(1,4-Bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl butanoate 129243-05-6 Butanoic acid, (1,4-bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl ester N,N'-Di-(3',4',5'-trimethoxybenzoyl)-2-n-butanoyloxymethylpiperazine