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 5-[3-(4-chloro-2-methylanilino)-3-oxopropyl]-2,4-dimethyl-1H-pyrrole-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C19H23ClN2O3
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