You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[6-fluoro-1-(3-fluorophenyl)sulfonylindol-3-yl]ethyl-[[3-(2,2,3,3-tetrafluoropropoxy)phenyl]methyl]azanium .
user
C26H23F6N2O3S+
assistant