You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1,1-difluoro-2-[[4-[(2-methylpropan-2-yl)oxycarbonyloxy]-1-adamantyl]methoxy]-2-oxoethanesulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H26F2O8S
assistant