You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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1-[3-[1,1-dideuterio-2-[methyl(trideuteriomethyl)amino]ethyl]-1H-indol-5-yl]-N-(trideuteriomethyl)methanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
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C14H21N3O2S
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