Using O=C(Nc1nc2cc(Oc3cccc([N+](=O)[O-])c3)ccn2n1)C1CC1 to produce Nc1cccc(Oc2ccn3nc(NC(=O)C4CC4)nc3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.