(E)-8-(3,4-Dihydroxystyryl)-1,3-diethyl-7-methylxanthine 155272-03-0 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(3,4-dihydroxyphenyl)ethenyl)-7-methyl-, (E)-