Using Cc1cc(OCc2ccc(F)cc2F)c(Cl)c(=O)n1Cc1ccc2c(c1)C(Br)(Br)C(=O)N2 to produce Cc1cc(OCc2ccc(F)cc2F)c(Cl)c(=O)n1Cc1ccc2c(c1)CC(=O)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.