You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-oxo-3-[1-(2,2,2-trichloroethoxycarbonyloxy)ethyl]azetidin-2-yl]sulfanylmethanedithioate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C9H9Cl3NO4S3-
assistant