You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-3-[3-(2-chloro-5-fluoropyrimidin-4-yl)oxy-4-methoxyphenyl]-2-cyano-N-(3,4-dimethylphenyl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H18ClFN4O3
assistant