You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[3-oxo-3-[5-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-5,8-diazaspiro[2.6]nonan-8-yl]prop-1-enyl]benzonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H22N6O
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