Using COCOc1c(Br)cc(C(C)(C)C)cc1C=O, OB(O)c1ccc(C(F)(F)F)nc1 to produce COCOc1c(C=O)cc(C(C)(C)C)cc1-c1ccc(C(F)(F)F)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.