You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-[3-[7-[3-(4-cyano-1,2-dihydropyridin-2-yl)phenyl]-9,9-diphenylfluoren-2-yl]phenyl]pyridine-4-carbonitrile is given. What is its corresponding molecular formula?
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C49H32N4
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