Using COC(=O)c1cccc2c1CC(C)(C)CC2NS(C)(=O)=O, CI to produce COC(=O)c1cccc2c1CC(C)(C)CC2N(C)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.