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 (5-fluoro-1,3-dihydroisoindol-2-yl)-[(3S,5S)-5-(pyrrolidine-1-carbonyl)pyrrolidin-3-yl]methanone into molecular formula.
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C18H22FN3O2
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