Using COC(CN(C)C(=O)Nc1ccc(Oc2cc([N+](=O)[O-])cc([N+](=O)[O-])c2)cc1)OC to produce CN1CCN(c2ccc(Oc3cc([N+](=O)[O-])cc([N+](=O)[O-])c3)cc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.