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 7-(2,4-dihydroxy-5-methoxyphenyl)-5-hydroxy-2,2-dimethyl-10-(3-methylbut-2-enyl)-7,8-dihydropyrano[3,2-g]chromen-6-one is given. What is its corresponding molecular formula?
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C26H28O7
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