Using O=C(OCC(Cl)(Cl)Cl)n1cc2ccc([N+](=O)[O-])cc2c1 to produce Nc1ccc2c(c1)CN(C(=O)OCC(Cl)(Cl)Cl)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.