Tert-butyl 3-{7-(bis{[2-(trimethylsilyl)ethoxy]methyl}amino)-3-[6-(2,6-difluorophenyl)pyridin-3-yl]pyrazolo[1,5-a]pyrimidin-5-yl}-8-azabicyclo[3.2.1]octane-8-carboxylate