Using Br[Mg]C1CCCCC1, Cc1cn(-c2cccc(C(F)(F)F)c2)cc1C=O to produce Cc1cn(-c2cccc(C(F)(F)F)c2)cc1C(O)C1CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.