You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-oxo-3-(4-phenylpiperazin-1-yl)propyl]-2-[4-(trifluoromethyl)phenoxy]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H24F3N3O3
assistant