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 N-(5-bromopyridin-2-yl)-1-[2-[(2-ethoxybenzoyl)amino]acetyl]piperidine-4-carboxamide is given. What is its corresponding molecular formula?
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C22H25BrN4O4
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