You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[8-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)naphthalen-1-yl]-2,3-dihydrothieno[3,4-b][1,4]dioxine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H16O4S2
assistant