Using CNC(=O)N1CCc2c1cccc2N(CC(=O)OC(C)(C)C)S(=O)(=O)c1cc(Cl)cc(Cl)c1 to produce CNC(=O)N1CCc2c1cccc2N(CC(=O)O)S(=O)(=O)c1cc(Cl)cc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.