Using C1CCNC1, CS(=O)(=O)O[C@@H]1CCN(c2nc3ccc(Br)cc3s2)C1 to produce Brc1ccc2nc(N3CC[C@H](N4CCCC4)C3)sc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.