Using O=C(Nc1ccc(F)cc1F)c1ccccc1O, Fc1ccc(CBr)c(F)c1 to produce O=C(Nc1ccc(F)cc1F)c1ccccc1OCc1ccc(F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.