(3R)-3-(1,2-DIHYDRO-1-METHYL-2-OXO-5-PYRAZOLO(1,5-A)PYRIDIN-3-YL-3H-IMIDAZO(4,5-B)PYRIDIN-3-YL)-.BETA.-OXO-1-PIPERIDINEPROPANENITRILE
(3r)-3-(1,2-dihydro-1-methyl-2-oxo-5-pyrazolo(1,5-a)pyridin-3-yl-3h-imidazo(4,5-b)pyridin-3-yl)-.beta.-oxo-1-piperidinepropanenitrile