Using CC(C)(C)OC(=O)c1ccc([N+](=O)[O-])c(CN(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c1 to produce CC(C)(C)OC(=O)c1ccc(N)c(CN(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.