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 1-[(3aS,8bR)-8b-(4-chlorobutoxy)-1,2,3a,4-tetrahydropyrrolo[2,3-b]indol-3-yl]-2,2,2-trifluoroethanone into molecular formula.
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C16H18ClF3N2O2
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