You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-[[6-[(3R)-1-(cyanomethyl)piperidin-3-yl]-2-methylpyrimidin-4-yl]amino]-N-(furan-2-ylmethyl)-1,3-thiazole-4-carboxamide into molecular formula.
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C21H23N7O2S
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