Using CCOC(=O)CCCOc1cccc(CCCCCCBr)c1CCC(=O)OCC, [O-][n+]1ccccc1 to produce CCOC(=O)CCCOc1cccc(CCCCCC=O)c1CCC(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.