You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[(2S)-2-(dimethylamino)-2-(1-methyl-2,3-dihydroindol-5-yl)ethyl]-N'-(2-methylsulfanylphenyl)oxamide into molecular formula.
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C22H28N4O2S
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