You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-(1-methylpyrrolidin-3-yl)-2-[[6-(trifluoromethoxy)-1,3-benzothiazol-2-yl]amino]benzimidazole-5-carboxylic acid into molecular formula.
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C21H18F3N5O3S
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