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 2,4-dimethyl-6-oxo-1-[2-oxo-2-(propan-2-ylamino)ethyl]piperidine-3-carboxylic acid is given. What is its corresponding molecular formula?
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C13H22N2O4
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