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 (3S,4R,4aR,7S,7aR)-3,4,7-trimethyl-4,4a,5,6,7,7a-hexahydro-3H-cyclopenta[c]pyran-1-one is given. What is its corresponding molecular formula?
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C11H18O2
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