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 2-[[4-oxo-4-(1,3-thiazol-2-ylamino)butanoyl]amino]-4-phenylthiophene-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C20H19N3O4S2
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