You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,4S)-5-[4-[6-carbamoyl-3-(pyrazin-2-ylamino)indazol-1-yl]pyridin-2-yl]-2,5-diazabicyclo[2.2.1]heptane-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H21N9O3
assistant