You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[5-[(5-fluoropyridin-2-yl)amino]pyridin-2-yl]morpholin-4-yl]-2-(2-propan-2-ylimidazol-1-yl)ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25FN6O2
assistant