Using CS(=O)(=O)OC1CN(c2nc3ccc(Br)cc3s2)C1, C1CCNCC1 to produce Brc1ccc2nc(N3CC(N4CCCCC4)C3)sc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.