You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,3aS,6S,8aS)-3,6-dimethyl-3,3a,4,5,6,8a-hexahydrocyclohepta[b]furan-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H16O2
assistant