You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (4R,5R,6S,7S)-6,7-bis[[tert-butyl(dimethyl)silyl]oxy]-5-methylsulfonyloxy-3-oxo-4,5,6,7-tetrahydro-1H-2-benzofuran-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H42O9SSi2
assistant