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 (3S)-3-[[3-(2-chlorophenyl)-1-(4-fluorophenyl)pyrazolo[3,4-d]pyrimidin-6-yl]amino]-2-methylbutan-2-ol .
user
C22H21ClFN5O
assistant