You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-amino-N-[4-[4-amino-6-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]cyclohexyl]-3-methylbutanamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H34ClN7O2
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