1 1C8 (7r)-8-cyclopentyl-7-ethyl-5-methyl-2-[2-(1,3-thiazol-4-yl)-1h-imidazol-1-yl]-7,8-dihydropteridin-6(5h)-one 1.000 2 1C7 (7r)-8-cyclopentyl-7-ethyl-5-methyl-2-(2-phenyl-1h-imidazol-1-yl)-7,8-dihydropteridin-6(5h)-one 0.788