Using Brc1ccc(N2CCNCC2)cc1, O=S(=O)(OCC(F)(F)F)C(F)(F)F to produce FC(F)(F)CN1CCN(c2ccc(Br)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.