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-chloro-N-[2-[1-[(E)-2-(4-chlorophenyl)ethenyl]piperidin-4-yl]phenyl]pyridine-4-carboxamide is given. What is its corresponding molecular formula?
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C25H23Cl2N3O
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