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 1-(3,4-difluorophenyl)-2-(4-ethoxyphenyl)-4-hydroxy-3-(thiophene-2-carbonyl)-2H-pyrrol-5-one is given. What is its corresponding molecular formula?
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C23H17F2NO4S
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