(8-(1-(3,4-dimethoxyphenyl)-2-hydroxyethyl)amino)-3,7-dihydro-7-(2-methoxyethyl)-1,3-dimethyl-1H-purine-2,6-dione
(8-(1-(3,4-dimethoxyphenyl)-2-hydroxyethyl)amino)-3,7-dihydro-7-(2-methoxyethyl)-1,3-dimethyl-1h-purine-2,6-dione