Using COC(=O)C(C)(C)C(Cc1ccc(OC)cc1)NS(=O)(=O)c1ccc(C)cc1, CI to produce COC(=O)C(C)(C)C(Cc1ccc(OC)cc1)N(C)S(=O)(=O)c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.