Using CCOC(=O)C(=O)OCC, CC(=O)CC(=O)c1cccc2ccccc12 to produce CCOC(=O)C(=O)CC(=O)CC(=O)c1cccc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.