8-((3R)-3-Aminopiperidin-1-yl)-7-(but-2-yn-1-yl)-3-Methyl-1-((4-Methylquinazolin-2-yl)Methyl)-3,7-Dihydro-1H-Purine-2,6-Dione
(R)-8-(3-Amino-Piperidin-1-yl)-7-but-2-ynyl-3-Methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3,7-dihydro-purine-2,6-dione