You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-propan-2-yl-4-[2-[2-(propan-2-ylamino)pyridin-4-yl]-1,2-dihydropyrazolo[1,5-a]pyridin-3-yl]pyrimidin-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H27N7
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