You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl 2-(dimethylamino)-5-methyl-8-nitro-4-oxo-1H-pyrrolo[3,2-c]quinoline-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C16H16N4O5
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