Using O=C1c2ccc([N+](=O)[O-])cc2C(=O)N1C1CCN(Cc2c[nH]c3ccccc23)CC1 to produce Nc1ccc2c(c1)C(=O)N(C1CCN(Cc3c[nH]c4ccccc34)CC1)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.