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Under IUPAC nomenclature, a molecule named 7-[1,6-dihydroxy-3-methyl-7-oxo-8-[(2-phenylhydrazinyl)methylidene]-5-propan-2-ylnaphthalen-2-yl]-3,8-dihydroxy-6-methyl-1-[(2-phenylhydrazinyl)methylidene]-4-propan-2-ylnaphthalen-2-one is given. What is its corresponding molecular formula?
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C42H42N4O6
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