Using COC(=O)c1ccc(OC)c(NC(=O)Cc2ccc(Cl)cc2Cl)c1 to produce COc1ccc(C(=O)O)cc1NC(=O)Cc1ccc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.