(E)-7-Methyl-1,3-dipropyl-8-(2,3,4-trimethoxystyryl)xanthine 147700-52-5 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-7-methyl-8-(2-(2,3,4-trimethoxyphenyl)ethenyl)-,(E)-