You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S,4R)-3-(6-methoxypyridin-3-yl)-4-[(4-methylphenyl)sulfonylamino]cyclohex-2-en-1-yl] acetate into molecular formula.
user
C21H24N2O5S
assistant