You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 6-[2-(1-oxidopyridin-1-ium-2-yl)cyclobutyl]-4-oxo-1-[1-[6-(trifluoromethyl)pyridin-3-yl]ethyl]-5H-pyrazolo[3,4-d]pyrimidine-3-carbonitrile ?
user
C23H18F3N7O2
assistant