You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-chloro-N-[3-chloro-4-(trifluoromethyl)phenyl]-6-(1,2,4-triazol-1-yl)benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H9Cl2F3N4O
assistant