Using Nc1cc([C@@H]2CNC(=O)C2)c([N+](=O)[O-])cc1Cl to produce O=C1C[C@H](c2ccc(Cl)cc2[N+](=O)[O-])CN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.