Using CCC(C(=O)Nc1ncc(C(=O)c2ccccc2Cl)s1)c1ccccc1 to produce CCC(C(=O)Nc1ncc(C(O)c2ccccc2Cl)s1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.