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 (2Z)-9-(4-hydroxy-3,5-dimethoxyphenyl)-2-[(2-methoxyphenyl)methylidene]-8,9-dihydrofuro[2,3-f]chromene-3,7-dione into molecular formula.
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C27H22O8
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