You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl]methylsulfanyl]-3-(4-methylpyridin-2-yl)quinazolin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H16FN5O2S
assistant