You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 4-[3-[1-[[5-chloro-2-[(1-methylpyrazol-4-yl)amino]pyrimidin-4-yl]amino]-2-hydroxyethyl]-2-fluorophenyl]morpholin-3-one into its molecular formula.
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C20H21ClFN7O3
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