Using Nc1cccc2c1OCC2, NC(=O)c1cc[n+](-c2ccc([N+](=O)[O-])cc2[N+](=O)[O-])cc1 to produce NC(=O)c1cc[n+](-c2cccc3c2OCC3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.