Using Oc1ccc(F)c(Br)c1, COC(=O)C(=O)c1ccccc1F to produce COC(=O)C(=O)c1ccccc1Oc1ccc(F)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.