You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-chloro-N-[5-[(4-chlorophenoxy)methyl]-1,3,4-thiadiazol-2-yl]-3-nitrobenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H10Cl2N4O4S
assistant