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-chloro-1-methylpyrrol-2-yl)-[3-(3-methyl-1,2,4-oxadiazol-5-yl)pyrrolidin-1-yl]methanone into its molecular formula.
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C13H15ClN4O2
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