(1,4-Bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl 2-chlorobenzoate 129229-94-3 Benzoic acid, 2-chloro-, (1,4-bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl ester N,N'-Di-(3',4',5'-trimethoxybenzoyl)-2-ortho-chlorobenzoyloxymethylpiperazine