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 2-(7-fluoro-2-methyl-1H-indol-3-yl)-1-[(2R)-2-(3-methyl-1,2-oxazol-5-yl)pyrrolidin-1-yl]ethanone into molecular formula.
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C19H20FN3O2
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