Using CC(C)[N+](=O)[O-], COc1cc(C(=O)C=Cc2ccncc2)cc(OC)c1OC to produce COc1cc(C(=O)CC(c2ccncc2)C(C)(C)[N+](=O)[O-])cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.