You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-chloro-3-[2-[2-chloro-5-(trifluoromethyl)anilino]-1,3-thiazol-4-yl]chromen-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H9Cl2F3N2O2S
assistant