You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl-[1-[(2-methylpropan-2-yl)oxycarbonyl]-4-(2-methylsulfonyloxyethyl)piperidin-4-yl]azanide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H27N2O5S-
assistant