(E)-1,3-Diethyl-8-(3-fluoro-4-methoxystyryl)-7-methylxanthine 155271-96-8 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(3-fluoro-4-methoxyphenyl)ethenyl)-7-methyl-, (E)-