(E)-1,3-diethyl-8-(3-hydroxy-4-methoxystyryl)-7-methyl-1H-purine-2,6(3H,7H)-dione;1,3-Diethyl-8-[(E)-2-(3-hydroxy-4-methoxyphenyl)vinyl]-7-methyl-3 ,7-dihydro-1H-purine-2,6-dione
(E)-1,3-diethyl-8-(3-hydroxy-4-methoxystyryl)-7-methyl-1H-purine-2,6(3H,7H)-dione;1,3-Diethyl-8-[(E)-2-(3-hydroxy-4-methoxyphenyl)vinyl]-7-methyl-3 ,7-dihydro-1H-purine-2,6-dione