Using CS(=O)(=O)Cl, CC(C)(C)OC(=O)NCC(O)CCOc1ccc(C#N)cc1 to produce CC(C)(C)OC(=O)NCC(CCOc1ccc(C#N)cc1)OS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.