1H-Imidazo(2,1-f)purine-2,4(3H,8H)-dione, 8-(2-hydroxyethyl)-1-methyl-7-phenyl- 8-(2-Hydroxyethyl)-1-methyl-7-phenyl-1H-imidazo(2,1-f)purine-2,4(3H,8H)-dione 85615-11-8