Using Cn1nc(Cc2ccc(O)c(Cl)c2Cl)c(Cl)c1OC(F)F, COC(=O)CBr to produce COC(=O)COc1ccc(Cc2nn(C)c(OC(F)F)c2Cl)c(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.