You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-chloro-2-(cyanomethyl)-6-(3-fluorophenyl)-5-[1-(7H-purin-6-ylamino)ethyl]benzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H15ClFN7
assistant