Using CC(C)(C)OC(=O)Nc1ccc(-c2ccccc2S(=O)(=O)CCO)cc1NC(=O)OC(C)(C)C to produce Nc1ccc(-c2ccccc2S(=O)(=O)CCO)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.