1 RXT (3r)-3-cyclopentyl-3-[4-(7h-pyrrolo[2,3-D]pyrimidin-4-yl)-1h-pyrazol-1-yl]propanenitrile 1.000 2 RG4 (3s)-3-cyclopentyl-3-[4-(7h-pyrrolo[2,3-D]pyrimidin-4-yl)-1h-pyrazol-1-yl]propanenitrile 1.000