Using BrCc1ccccc1, CC(C)(C)N(NC(=O)c1ccccc1)C(=O)c1ccccc1 to produce CC(C)(C)N(C(=O)c1ccccc1)N(Cc1ccccc1)C(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.