You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[4-amino-3-[4-[(5-ethyl-1,3-benzoxazol-2-yl)amino]phenyl]pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-2-methyl-2-(methylamino)propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H35N9O2
assistant