Using COc1cc(C(O)(c2ccc(Cl)cc2)c2ccc(Cl)cc2)cc2c(Br)ccnc12 to produce COc1cc(C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)cc2c(Br)ccnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.