Using O=C(O)CC1CC(c2ccc(Cl)c(Cl)c2)=NO1, CC(=O)Cl to produce COC(=O)CC1CC(c2ccc(Cl)c(Cl)c2)=NO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.