Using COC(=O)c1ccc(OCC(=O)OCc2ccccc2)c(-n2cccc2)c1 to produce COC(=O)c1ccc(OCC(=O)O)c(-n2cccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.