You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(3-bromophenyl)-7-[6-[(1S,4S)-2-oxa-5-azabicyclo[2.2.1]heptan-5-yl]pyridin-3-yl]pyrido[2,3-d]pyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H19BrN6O
assistant