Using C[C@H](N)C(N)=O, O=C1CC[C@@H](C(=O)Oc2c(Cl)c(Cl)c(Cl)c(Cl)c2Cl)N1 to produce C[C@H](NC(=O)[C@@H]1CCC(=O)N1)C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.