You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 5-chloro-2-[[(E,3Z)-3-(4-chloro-5-methyl-2-sulfidophenyl)sulfonylimino-1,3-bis[4-(dimethylamino)pyridin-1-ium-1-yl]-2-nitroprop-1-enyl]sulfamoyl]-4-methylbenzenethiolate ?
user
C31H31Cl2N7O6S4
assistant