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 7-[(3R,5S)-3,5-dimethylpiperidin-1-yl]-2,5-dimethyl-3-(4-methylphenyl)pyrazolo[1,5-a]pyrimidine .
user
C22H28N4
assistant