Using CS(=O)(=O)Cl, Brc1ccc(C2=N[NH2+]C3=C2CNCC3)cc1 to produce CS(=O)(=O)N1CCc2[nH]nc(-c3ccc(Br)cc3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.