You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-1-phenylmethoxy-3-[(5-propan-2-ylpyrazolo[1,5-a]pyrimidin-7-yl)amino]propan-2-ol is the IUPAC name of a molecule. Please give its molecular formula.
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C19H24N4O2
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