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Under IUPAC nomenclature, a molecule named N-(4-tert-butylphenyl)-N-[4-(4-tert-butylphenyl)phenyl]-9,9-dimethyl-6-spiro[adamantane-2,9'-fluorene]-3'-ylfluoren-3-amine is given. What is its corresponding molecular formula?
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C63H63N
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