Using COc1cc(Br)ccc1C#N, OB(O)c1ccc(C(F)(F)F)cc1 to produce COc1cc(-c2ccc(C(F)(F)F)cc2)ccc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.