Using CC(C)C(C(=O)NOCc1ccccc1)N1C(=O)NC(COc2ccc(Br)cc2)C1=O to produce CC(C)C(C(=O)NO)N1C(=O)NC(COc2ccc(Br)cc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.