(E)-1,3-Diethyl-7-methyl-8-(3-trifluoromethylstyryl)xanthine 155271-87-7 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-7-methyl-8-(2-(3-(trifluoromethyl)phenyl)ethenyl)-, (E)-