Using Fc1ccc(Oc2ccc(C(F)(F)F)cc2Br)c(F)c1, COB(OC)OC to produce OB(O)c1cc(C(F)(F)F)ccc1Oc1ccc(F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.