Using Cn1c2c(ccc1=O)C(=O)CCC2, NCCc1ccc([N+](=O)[O-])cc1 to produce Cn1c2c(ccc1=O)C(NCCc1ccc([N+](=O)[O-])cc1)CCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.