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-methyl-N-[(1R)-2-methyl-1-(2-methyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidin-5-yl)propyl]pyrazole-3-carboxamide into molecular formula.
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C16H20N6O2
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