Using BrCc1ccccc1, COc1cc(NC(=O)C(C)C)c(Br)cc1C to produce COc1cc(N(Cc2ccccc2)C(=O)C(C)C)c(Br)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.