Using COC(=O)COc1cccc(O)c1C(C)=O, O=Cc1ccc(Br)cc1 to produce O=C(O)COc1cccc(O)c1C(=O)C=Cc1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.