Using CCOC(=O)Nc1ccc2cc(OC(C)=O)ccc2c1, O=C1CCC(=O)N1Cl to produce CCOC(=O)Nc1ccc2cc(OC(C)=O)ccc2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.