You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3,3-dimethyl-2-[3-(3-methyl-5-sulfo-1,3-dihydroindol-2-ylidene)prop-1-enyl]indole-5-sulfonic acid into molecular formula.
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C22H22N2O6S2
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