Using CC(=O)N1CCc2cc(Br)c(S(=O)(=O)Cl)cc21, CCN(CC)CC to produce CNS(=O)(=O)c1cc2c(cc1Br)CCN2C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.