You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (1R,2S,6S,8S)-3-ethenyl-11-methoxy-3,7,7-trimethyl-9-oxo-10-oxatricyclo[6.2.2.01,6]dodec-11-ene-2-carboxylic acid into molecular formula.
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C18H24O5
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