You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl (3R)-3-[4-[3-cyano-4-[[(1R)-1-pyridin-2-ylethyl]amino]pyrazolo[1,5-a]pyridin-6-yl]-5-methylpyrazol-1-yl]pyrrolidine-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H32N8O2
assistant