You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-1-(4-propan-2-ylphenoxy)-3-[2-(trifluoromethyl)benzimidazol-1-yl]propan-2-ol into its molecular formula.
user
C20H21F3N2O2
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