You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(NZ)-N-(5,6-dichloro-2-methyl-4-oxocyclohex-2-en-1-ylidene)benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H11Cl2NO3S
assistant