You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(tert-butylamino)-2-oxoethyl] 4-[(3S,5R)-3,5-dimethylpiperidin-1-yl]sulfonylbenzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H30N2O5S
assistant