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-methyl-1-[2-(2-methyl-5-nitroimidazol-1-yl)ethyl]piperidine-2-carboxylic acid is given. What is its corresponding molecular formula?
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C13H20N4O4
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