You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[[(3S,4S)-4-acetyloxy-4-[(4-acetyloxy-3-methoxyphenyl)methyl]-5-oxooxolan-3-yl]methyl]-2-methoxyphenyl] acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H28O10
assistant