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 ethyl 4-[(1-ethyl-2,3-dioxo-4H-quinoxaline-6-carbonyl)amino]piperidine-1-carboxylate is given. What is its corresponding molecular formula?
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C19H24N4O5
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