Using COc1ccc(NC(=O)c2cc(C(C)(C)C)c(O)c(C(C)(C)C)c2)c([N+](=O)[O-])c1 to produce COc1ccc(NC(=O)c2cc(C(C)(C)C)c(O)c(C(C)(C)C)c2)c(N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.