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 3-[[2-[(2S)-2-[2-(4,5-dimethyl-1,3-thiazol-2-yl)acetyl]pyrrolidin-1-yl]pyrrolo[2,1-f][1,2,4]triazin-4-yl]amino]-1H-pyrazole-5-carboxamide into molecular formula.
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C21H23N9O2S
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