You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[3-(trifluoromethyl)phenyl]piperazin-1-yl]-2-(2,4,6-trimethylphenoxy)ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25F3N2O2
assistant