(E)-4-(3-Benzyl-1,2,3,6-tetrahydro-1-methyl-2,6-dioxo-9H-purin-8-yl)cinnamic acid 106465-57-0 2-Propenoic acid, 3-(4-(2,3,6,7-tetrahydro-1-methyl-2,6-dioxo-3-(phenylmethyl)-1H-purin-8-yl)phenyl)-, (E)-