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 (2S)-5-oxo-1-piperidin-4-yl-N-(pyridin-3-ylmethyl)pyrrolidine-2-carboxamide is given. What is its corresponding molecular formula?
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C16H22N4O2
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