Using CCNc1cc(Oc2cccc(NC(=O)OC(C)(C)C)c2)ncc1[N+](=O)[O-] to produce CCNc1cc(Oc2cccc(NC(=O)OC(C)(C)C)c2)ncc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.