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Under IUPAC nomenclature, a molecule named N-(benzenesulfonyl)-6-sulfanylidene-N-(6-sulfanylidenecyclohexa-1,3-dien-1-yl)sulfonylcyclohexa-1,3-diene-1-carboxamide is given. What is its corresponding molecular formula?
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C19H15NO5S4
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