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-[1-[3-(3-chloro-4-cyano-5-fluorophenyl)pyrazol-1-yl]propan-2-yl]-3-(1H-imidazol-5-yl)-1H-pyrazole-5-carboxamide into molecular formula.
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C20H16ClFN8O
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