You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-(hydroxymethyl)-6-[2,2,6-trimethyl-6-(4-methylcyclohex-3-en-1-yl)oxan-3-yl]oxyoxane-3,4,5-triol by IUPAC nomenclature, provide its molecular formula.
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C21H36O7
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