Using CC(C)C[C@@H](NS(=O)(=O)c1ccc(Cl)cc1)C(N)=O, CC(C)(C)OC(=O)CBr to produce CC(C)C[C@H](C(N)=O)N(CC(=O)OC(C)(C)C)S(=O)(=O)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.