Using COc1ccc(S(=O)(=O)NC(C)(C)C(=O)NOCc2ccccc2)cc1 to produce COc1ccc(S(=O)(=O)NC(C)(C)C(=O)NO)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.