Using CC1(C)OB(c2ccnc(C(F)(F)F)c2)OC1(C)C, Cc1nn(-c2ccc(F)cc2F)nc1CBr to produce Cc1nn(-c2ccc(F)cc2F)nc1Cc1ccnc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.