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 1-[[2-(3-chlorophenyl)-5-(trifluoromethyl)pyrazol-3-yl]methyl]-3-(2-hydroxy-2,3-dihydro-1H-inden-4-yl)urea into its molecular formula.
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C21H18ClF3N4O2
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