Using COC(=O)COc1ccc(OCc2nc(-c3ccccc3Cl)cs2)cc1C to produce Cc1cc(OCc2nc(-c3ccccc3Cl)cs2)ccc1OCC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.