Using CC(C)(C)OC(=O)N1CCC2(CC1)CO2, Cc1ccc(S(=O)(=O)O)cc1 to produce CC(C)(C)OC(=O)N1CCC(O)(CS)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.