You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,3S,3aS,7S,7aS)-4-methylidene-3-(2-methylprop-2-enyl)-7-propan-2-yl-3,3a,5,6,7,7a-hexahydro-1H-2-benzofuran-1-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H26O2
assistant