You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(2,4-dimethoxyphenyl)-1,3-thiazol-2-yl]-2-[2-(trifluoromethyl)phenoxy]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H17F3N2O4S
assistant