Using Cc1c(-c2ccc(C(F)(F)F)cc2)nc2ccc(Br)cc2c1C(=O)O, CS(C)=O to produce COC(=O)c1c(C)c(-c2ccc(C(F)(F)F)cc2)nc2ccc(Br)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.