(E)-8-(2-(1,4-Benzodioxan-6-yl)vinyl)-1,3-diethyl-7-methylxanthine 155814-32-7 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(2,3-dihydro-1,4-benzodioxin-6-yl)ethenyl)-7-methyl-, (E)-