You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-(2-pyridin-4-ylethyl)-1,3-thiazol-4-yl]-N-[3-(trifluoromethyl)phenyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H16F3N3OS
assistant