You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(3-fluoro-4-methylanilino)-1-oxopropan-2-yl] (E)-3-(4-ethoxyphenyl)prop-2-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H22FNO4
assistant