(E)-8-(4-(4-Aminobutoxy)styryl)-1,3-diethyl-7-methylxanthine 155272-09-6 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(4-(4-aminobutoxy)phenyl)ethenyl)-1,3-diethyl-7-methyl-,(E)-