You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named ethyl 3-carbamoyl-6-methyl-4-(3-nitrophenyl)-2-oxo-3,4-dihydro-1H-pyridine-5-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C16H17N3O6
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