Using CCOCC, CC(=O)c1ccc(NC(=O)c2cccc(S(=O)(=O)N3CCCCC3)c2)cc1 to produce CC(C)(O)c1ccc(NC(=O)c2cccc(S(=O)(=O)N3CCCCC3)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.