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-[2-[2-[[5-chloro-2-(3,4,5-trimethoxyanilino)pyrimidin-4-yl]amino]-5-methyl-N-methylsulfonylanilino]ethyl]acetamide into molecular formula.
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C25H31ClN6O6S
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