Using CS(=O)(=O)Cl, CC(C)(C)OC(=O)CNc1ccc(Br)cc1 to produce CC(C)(C)OC(=O)CN(c1ccc(Br)cc1)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.