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 N-[3-[5-amino-4-cyano-1-(4-fluorophenyl)pyrazol-3-yl]propyl]-2-[2-(2-oxoimidazolidin-1-yl)-1,3-thiazol-4-yl]acetamide into molecular formula.
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C21H21FN8O2S
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