Using COC(=O)c1cc(Cl)c(NC(=O)OCc2ccccc2)cc1OC to produce COc1cc(NC(=O)OCc2ccccc2)c(Cl)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.