You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
sodium;8-chloro-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluorooctane-1-sulfinate is the IUPAC name of a molecule. Please give its molecular formula.
user
C8ClF16NaO2S
assistant