(E)-1,3-Diethyl-7-methyl-8-(3,4-methylenedioxystyryl)xanthine 155271-13-9 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(1,3-benzodioxol-5-yl)ethenyl)-1,3-diethyl-7-methyl-, (E)-