Using FC(F)(F)c1cccc(-c2csc(Cl)n2)c1, CCOC(=O)Cl to produce CCOC(=O)c1sc(Cl)nc1-c1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.