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 4-[6-chloro-7-fluoro-5-[(2-methylpropan-2-yl)oxy]-1H-indol-3-yl]-N-propan-2-ylbutanamide into its molecular formula.
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C19H26ClFN2O2
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