Using O=S(=O)(c1ccccc1)c1cccc(Br)c1, CC(C)(C)OC(=O)N1CCNCC1 to produce CC(C)(C)OC(=O)N1CCN(c2cccc(S(=O)(=O)c3ccccc3)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.