You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R,9R)-3lambda6,11lambda6-dithiatricyclo[11.3.1.15,9]octadeca-1(17),13,15-triene 3,3,11,11-tetraoxide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H22O4S2
assistant