You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-2-[(2S,3S,4R)-5-acetylsulfanyl-3,4-dibenzoyloxyoxolan-2-yl]-2-benzoyloxyethyl] benzoate;[(2R)-2-benzoyloxy-2-[(2S,3S,4R)-3,4-dibenzoyloxy-5-methylsulfanyloxolan-2-yl]ethyl] benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C71H60O19S2
assistant