You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4R,5R,6aR)-4-[[tert-butyl(dimethyl)silyl]oxymethyl]-2-oxo-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-5-yl] 4-methylbenzenesulfonate is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H32O6SSi
assistant