You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-[4-[[2-[(2,6-dichlorophenyl)methyl]-[1,3]thiazolo[5,4-d]pyrimidin-7-yl]amino]phenyl]-2-methylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
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C22H19Cl2N5OS
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