You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[7-bromo-2-methyl-3-[[2-methyl-3-(trifluoromethyl)phenyl]methyl]benzimidazol-5-yl]morpholine into its molecular formula.
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C21H21BrF3N3O
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