You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-(2,5-dimethylphenyl)-5-(4-fluorophenyl)pyridine-3-carboxamide;icosa-2,4,6,8,10,12,14,16,18-nonayne;molecular hydrogen;nitrous amide;hydrofluoride by IUPAC nomenclature, provide its molecular formula.
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C40H36F2N4O2
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