Using CCOC(=O)Cn1c(=O)[nH]c2cccc(C(CC)CC)c21, O=C1CCC(=O)N1Cl to produce CCOC(=O)Cn1c(=O)[nH]c2c(Cl)ccc(C(CC)CC)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.