You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[4-[2-(3,6-dihydro-2H-pyran-4-yl)ethylamino]pyrazolo[3,4-d]pyrimidin-1-yl]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H19N5O3
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