You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(1E,3E,5E,7E)-7-[3,3-dimethyl-6-phenyl-1-(4-sulfobutyl)indol-2-ylidene]hepta-1,3,5-trienyl]-1,1-dimethyl-7-(trioxidanylsulfanyl)-3-[4-(trioxidanylsulfanyl)butyl]benzo[e]indol-3-ium-9-sulfonic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C45H51N2O12S4+
assistant