You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[(2S)-butan-2-yl]phenyl]-2-[methyl-[2-oxo-2-[2-(trifluoromethyl)anilino]ethyl]amino]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26F3N3O2
assistant