You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[[(3S,7R,8R,9S)-7-benzyl-8-ethoxy-9-methyl-2-oxooxonan-3-yl]carbamoyl]-4-methoxypyridin-3-yl]oxymethyl acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H36N2O8
assistant