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 (4R)-4-[(R)-(2,4-dichlorophenyl)-[2-(4-fluorophenyl)-5-methyl-3-oxo-1H-pyrazol-4-yl]methyl]-2-(4-fluorophenyl)-5-methyl-4H-pyrazol-3-one into its molecular formula.
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C27H20Cl2F2N4O2
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