You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-chloro-6-[(3S)-3-[(1S)-2-cyano-1-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]ethyl]pyrrolidin-1-yl]benzonitrile .
user
C23H19ClN8
assistant