You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(1S,4S)-5-[4-amino-3-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]-2-azabicyclo[2.2.1]heptan-2-yl]prop-2-yn-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H22N6O2
assistant