Using COC(=O)c1ccccc1C(=O)OC, CC(=O)c1ccc(Br)cc1 to produce O=C(c1ccc(Br)cc1)C1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.