You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl 5-[[2-chloro-7-[2-(dimethylamino)ethyl]pyrrolo[2,3-d]pyrimidin-4-yl]amino]indazole-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26ClN7O2
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