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 [2-(dimethylamino)-7-hydroxy-6-methoxy-1-benzofuran-3-yl]-(3,4,5-trimethoxyphenyl)methanone is given. What is its corresponding molecular formula?
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C21H23NO7
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