(R)-7-(but-2-yn-1-yl)-3-methyl-8-(3-(methylamino)piperidin-1-yl)-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione
(R)-7-(but-2-yn-1-yl)-3-methyl-8-(3-(methylamino)piperidin-1-yl)-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione