You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (4Z)-5-(3-bromo-4-hydroxy-5-methoxyphenyl)-1-[2-(diethylamino)ethyl]-4-[(3,4-dimethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione into molecular formula.
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C26H31BrN2O7
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