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 (1R,2S,7S,9R,17R)-2,6,14,17-tetramethyl-10-oxatetracyclo[7.7.1.02,7.013,17]heptadeca-5,12,14-trien-11-one is given. What is its corresponding molecular formula?
user
C20H26O2
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