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 4-[[(3E)-3-[(2,6-dimethoxyphenyl)-hydroxymethylidene]-2-(3-methoxyphenyl)-4,5-dioxopyrrolidin-1-yl]methyl]benzoic acid is given. What is its corresponding molecular formula?
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C28H25NO8
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