You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[(2R)-1-(1H-imidazol-5-ylmethyl)piperidin-2-yl]-2-methylpyrazolo[1,5-a]pyrimidine by IUPAC nomenclature, provide its molecular formula.
user
C16H20N6
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