Using NCCCC(N)=O, O=C1CC[C@@H](C(=O)Oc2cc(Cl)c(Cl)cc2Cl)N1 to produce NCCC(C(N)=O)C(=O)[C@@H]1CCC(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.