Using O=S(=O)(c1ccccc1)N1CCNCC1, COC(=O)c1ccc(CBr)cc1 to produce COC(=O)c1ccc(CN2CCN(S(=O)(=O)c3ccccc3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.