You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[2-[2-(4-acetylpiperazin-1-ium-1-ylidene)-3-[(2E)-2-[1,1-dimethyl-7-sulfo-3-(3-sulfobutyl)benzo[e]indol-2-ylidene]ethylidene]cyclopentylidene]ethylidene]-1,1-dimethyl-3-(3-sulfobutyl)benzo[e]indole-7-sulfonic acid into molecular formula.
user
C51H61N4O13S4+
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