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 (4E)-4-[(4-chloro-3-methoxyphenyl)-hydroxymethylidene]-1-(3-chloro-4-methylphenyl)-5-(3-methoxyphenyl)pyrrolidine-2,3-dione is given. What is its corresponding molecular formula?
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C26H21Cl2NO5
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