Using CI, Cc1cc(O[C@H]2C[C@@H](NS(C)(=O)=O)C2)cc(C)c1Br to produce Cc1cc(O[C@H]2C[C@@H](N(C)S(C)(=O)=O)C2)cc(C)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.