Using O=C[O-], O=C(CBr)CC(=O)OC(c1ccccc1)c1ccccc1 to produce O=C(CO)CC(=O)OC(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.