You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[[3-[6-methyl-4-oxo-2-(trifluoromethyl)-1H-quinolin-7-yl]phenyl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H13F3N2O2S2
assistant