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 3-(4-amino-3-methoxyphenyl)-1-[2-[4-(dimethylamino)piperidin-1-yl]ethyl]pyrazolo[3,4-d]pyrimidin-4-amine .
user
C21H30N8O
assistant