7-CYCLOPENTYL-2-((5-(1-PIPERAZINYL)-2-PYRIDINYL)AMINO)-7H-PYRROLO(2,3-D)PYRIMIDINE-6-CARBOXYLIC ACID
7-cyclopentyl-2-((5-(1-piperazinyl)-2-pyridinyl)amino)-7h-pyrrolo(2,3-d)pyrimidine-6-carboxylic acid