You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[7-[1,6-dimethyl-8-sulfo-1-(sulfomethyl)-3-(3-sulfopropyl)benzo[e]indol-3-ium-2-yl]hepta-2,4,6-trienylidene]-1-ethyl-1,8-dimethyl-3-pentylbenzo[e]indole-6-sulfonic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C46H55N2O12S4+
assistant