3-((4,7'-BI-7H-PYRROLO(2,3-D)PYRIMIDIN)-4'-YLMETHYLAMINO)-4-METHYL-.BETA.-OXO-1-PIPERIDINEPROPANENITRILE, (3R,4R)-
3-((4,7'-bi-7h-pyrrolo(2,3-d)pyrimidin)-4'-ylmethylamino)-4-methyl-.beta.-oxo-1-piperidinepropanenitrile, (3r,4r)-