Using CC1(C)OB(c2ccc([N+](=O)[O-])cc2)OC1(C)C, COC(=O)C(C(C)C)N1C(=O)c2ccc(Br)cc2C1=O to produce COC(=O)C(C(C)C)N1C(=O)c2ccc(-c3ccc([N+](=O)[O-])cc3)cc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.