Using O=c1ncc(Cl)c[nH]1, CC(=O)N[C@H]1C(Cl)O[C@H](COC(C)=O)[C@@H](OC(C)=O)[C@@H]1OC(C)=O to produce CC(=O)N[C@H]1C(n2cc(Cl)cnc2=O)O[C@H](COC(C)=O)[C@@H](OC(C)=O)[C@@H]1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.