You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [2-(1H-pyrrol-2-yl)pyridin-3-yl]-[(1S,4S,6R)-6-[5-(trifluoromethyl)pyridin-2-yl]oxy-2-azabicyclo[2.2.2]octan-2-yl]methanone into molecular formula.
user
C23H21F3N4O2
assistant