You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-fluoro-4-[4-[6-[[(1S,2R,3S,5R)-2-fluoro-9-azabicyclo[3.3.1]nonan-3-yl]-methylamino]-1,2,4-triazin-3-yl]-3-hydroxyphenyl]-1-methylpyrimidin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H25F2N7O2
assistant