You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
11-[2-[2-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]undecane-1-thiolate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H47O7S-
assistant