You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-[4-(ethylaminomethyl)piperidin-1-yl]-3-[2-(trifluoromethoxy)phenyl]propan-1-one is given. What is its corresponding molecular formula?
user
C18H25F3N2O2
assistant