You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tetrasodium;2-chloro-5-(4-chlorobenzene-3,5-diid-1-yl)sulfonylbenzene-1,3-disulfonate;sulfur trioxide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H4Cl2Na4O14S5
assistant