You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[(2S)-2-[5-[3-chloro-2-fluoro-6-(trifluoromethyl)phenyl]-1-oxidopyridin-1-ium-2-yl]-3-(2-methylcyclopropyl)propanoyl]amino]benzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H21ClF4N2O4
assistant