You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-hydroxyethyl-[2-hydroxy-3-(1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoroheptylsulfonylamino)propyl]-dimethylazanium ?
user
C14H18F15N2O4S+
assistant