Using CS(=O)(=O)Cl, CC(C)(C)OC(=O)C(C)(C)Oc1cccc(CCCO)c1 to produce CC(C)(C)OC(=O)C(C)(C)Oc1cccc(CCCOS(C)(=O)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.