Using Cc1cccc(S(=O)(=O)Nc2ccc(C)n(CC(=O)OC(C)(C)C)c2=O)c1 to produce Cc1cccc(S(=O)(=O)Nc2ccc(C)n(CC(=O)O)c2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.