Using CCCCCCC(Br)C(=O)OCC, CCOC(=O)C(CCC(=O)[O-])C(=O)[O-] to produce CCCCCCC1C(=O)CCC1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.