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 [(1S,3R)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropyl]-[(1R,5S)-1,3,3-trimethyl-6-azabicyclo[3.2.1]octan-6-yl]methanone into molecular formula.
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C18H27Cl2NO
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