You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3S)-3-(furan-2-ylmethylamino)-1-[(1S,2S)-2,6,6-trimethylcyclohex-3-en-1-yl]butan-1-one into molecular formula.
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C18H27NO2
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