You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[2-oxo-2-(2H-pyrazolo[3,4-b]pyridin-3-ylamino)ethyl]piperazin-1-yl]-N-(2H-pyrazolo[3,4-b]pyridin-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H22N10O2
assistant