Using O=C1CCc2cc(N3CCN(C(=O)c4ccc([N+](=O)[O-])cc4)CC3)ccc2N1 to produce Nc1ccc(C(=O)N2CCN(c3ccc4c(c3)CCC(=O)N4)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.