You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (1R,2R,6R,8S)-4,4-dimethyl-3,5,7,11-tetraoxatricyclo[6.3.0.02,6]undecane-9,10-dione by IUPAC nomenclature, provide its molecular formula.
user
C9H10O6
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