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