Using O=C1OC(=O)c2c1cccc2[N+](=O)[O-], CC1(N)CCC(=O)NC1=O to produce CC1(N2C(=O)c3cccc([N+](=O)[O-])c3C2=O)CCC(=O)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.