You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [2-[4-(difluoromethylsulfanyl)anilino]phenyl]-[(2R,6S)-2,6-dimethylmorpholin-4-yl]methanone by IUPAC nomenclature, provide its molecular formula.
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C20H22F2N2O2S
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