Using O=C(Nc1ccc([N+](=O)[O-])cc1)C(=O)N1CCC(Cc2ccccc2)CC1 to produce Nc1ccc(NC(=O)C(=O)N2CCC(Cc3ccccc3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.