You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3aR,4S,5R,6aS)-5-[tert-butyl(dimethyl)silyl]oxy-4-[(Z)-3-oxooct-1-enyl]-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-2-one by IUPAC nomenclature, provide its molecular formula.
user
C21H36O4Si
assistant