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 (4R,5R)-4-benzyl-5-[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]oxyoxolan-2-one is given. What is its corresponding molecular formula?
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C21H30O3
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