Using CCC(=O)NC1CCN(c2ccc([N+](=O)[O-])c(C=CC(=O)OC)c2)CC1 to produce CCC(=O)NC1CCN(c2ccc3c(c2)CCC(=O)N3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.