6'-((6-Amino-4-pyrimidinyl)amino)-8'-methyl-2'H-spiro(cyclohexane-1,3'-imidazo(1,5-a)pyridine)-1',5'-dione
6'-((6-amino-4-pyrimidinyl)amino)-8'-methyl-2'h-spiro(cyclohexane-1,3'-imidazo(1,5-a)pyridine)-1',5'-dione