You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
phenyl-propan-2-yl-[4-[2-(trifluoromethylsulfonylsulfamoyloxy)ethoxy]phenyl]sulfanium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H21F3NO6S3+
assistant