129230-07-5 Carbamic acid, (1,3-dimethylbutyl)-, (1,4-bis(3,4,5-trimethoxybenzoyl)-2-piperazinyl)methyl ester N,N'-Di-(3',4',5'-trimethoxybenzoyl)-2-N''-(1',3'-dimethyl)butylcarbamoyloxymethylpiperazine