You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [(2S)-2-[5-(4-chlorophenyl)-2-(dimethylamino)pyrimidin-4-yl]pyrrolidin-1-yl]-(4-methyl-1,3-thiazol-5-yl)methanone .
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C21H22ClN5OS
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