Using Cc1cc(OCC(C)(C)COS(C)(=O)=O)cc(C)c1Br, CS(=O)[O-] to produce Cc1cc(OCC(C)(C)CS(C)(=O)=O)cc(C)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.