You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 6-[(2E)-2-[(2E,4E)-5-[1,1-dimethyl-6,8-bis(2-sulfoethylsulfamoyl)-3-(3-sulfopropyl)benzo[e]indol-3-ium-2-yl]penta-2,4-dienylidene]-1,1-dimethyl-6,8-bis(2-sulfoethylsulfamoyl)benzo[e]indol-3-yl]hexanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C50H67N6O25S9+
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