You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(4S)-7-methoxy-2,2-dimethyl-3,4-dihydrochromen-4-yl]-1,3-dimethylpyrazolo[3,4-d]pyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H23N5O2
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