You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,3R,4R,6R,8R)-4-(benzenesulfonyl)-3,6-dimethyltricyclo[6.2.1.02,7]undeca-2(7),9-diene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22O2S
assistant