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 3-(5-chloro-1-benzofuran-2-carbonyl)-4-hydroxy-2-(3-methoxyphenyl)-1-(pyridin-4-ylmethyl)-2H-pyrrol-5-one is given. What is its corresponding molecular formula?
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C26H19ClN2O5
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