You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(1,3-dithiolan-2-yl)phenyl]-(8-methoxy-3,4-dihydro-2H-quinolin-1-yl)methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H21NO2S2
assistant