You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[3-(4-ethoxy-3-methoxyphenyl)prop-2-enoyl]-6-(trifluoromethyl)-1H-pyridin-2-one by IUPAC nomenclature, provide its molecular formula.
user
C18H16F3NO4
assistant