Using O=C(C1CCNCC1)N1CCN(c2ccncn2)CC1, O=S(=O)(Cl)c1ccc(Br)cc1 to produce O=C(C1CCN(S(=O)(=O)c2ccc(Br)cc2)CC1)N1CCN(c2ccncn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.