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 (2R)-1-(2,3-dihydroindol-1-yl)-2-imidazol-1-yl-4-pyrrolidin-1-ylbutane-1,4-dione into its molecular formula.
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C19H22N4O2
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