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)-2-[2-[(2-fluorophenyl)sulfonylamino]ethyl]-N-methyl-1-pyridin-3-ylcyclohexane-1-carbothioamide into molecular formula.
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C21H26FN3O2S2
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