Using CC(C)(C)OC(=O)n1cc(Br)c2cc([N+](=O)[O-])ccc21, CC(C)(C)OC(=O)N1CC=C(B2OC(C)(C)C(C)(C)O2)CC1 to produce CC(C)(C)OC(=O)N1CC=C(c2c[nH]c3ccc([N+](=O)[O-])cc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.