You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[5-[3-[7-(3-fluorophenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]pyridin-3-yl]-2-phenylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H21FN8O
assistant