TERT-BUTYL 4-(6-(2-(5-(4-(TERT-BUTOXYCARBONYL)PIPERAZIN-1-YL)PYRIDIN-2-YLAMINO)-8-CYCLOPENTYL-5-METHYL-7-OXO-7,8-DIHYDROPYRIDO(2,3-D)PYRIMIDIN-6-YLAMINO)PYRIDIN-3-YL)PIPERAZINE-1-CARBOXYLATE
tert-butyl 4-(6-(2-(5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-ylamino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido(2,3-d)pyrimidin-6-ylamino)pyridin-3-yl)piperazine-1-carboxylate