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 4-[[(1R,8aS)-8a-methyl-2-methylidene-6-oxo-3,4,4a,5,7,8-hexahydro-1H-naphthalen-1-yl]methylsulfanyl]-2H-furan-5-one into molecular formula.
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C17H22O3S
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