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 (3R)-3-methyl-1-(2,5,7-trimethylpyrazolo[1,5-a]pyrimidine-3-carbonyl)pyrrolidine-3-carboxylic acid into its molecular formula.
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C16H20N4O3
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