You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,9S,11R)-9-hydroxy-14,14-dimethyltetracyclo[9.2.1.01,9.03,8]tetradeca-3,5,7-trien-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H18O2
assistant