(1,4-Bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl octanoate 129229-91-0 N,N'-Di-(3',4',5'-trimethoxybenzoyl)-2-n-octanoyloxymethylpiperazine Octanoic acid, (1,4-bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl ester