Using O=C1CCCN(C(=O)c2ccc([N+](=O)[O-])cc2)c2ccccc21 to produce Nc1ccc(C(=O)N2CCCC(=O)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.