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 3-[1-[2-(2,3-difluoro-N-pyridin-2-ylanilino)ethyl]piperidin-4-yl]quinazolin-4-one is given. What is its corresponding molecular formula?
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C26H25F2N5O
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