Using CCSSCC, CCN(CC)C(=O)n1cnc(S(=O)(=O)C(F)(F)Br)n1 to produce CCSC(F)(F)S(=O)(=O)c1ncn(C(=O)N(CC)CC)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.