You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-(4-methylpiperazin-1-yl)phenyl]-3-[4-[4-(3-oxa-8-azabicyclo[3.2.1]octan-8-yl)-1-(2,2,2-trifluoroethyl)pyrazolo[3,4-d]pyrimidin-6-yl]phenyl]urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H34F3N9O2
assistant