Using CCOCn1nccc1C(=O)c1ccc(OCC(=O)OCC)c(Cl)c1Cl to produce CCOCn1nccc1C(=O)c1ccc(OCC(=O)O)c(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.