Using CCOC(=O)C(=O)OCC, COC(=O)CCCc1ccccc1CCC(C)=O to produce O=C(O)CCCc1ccccc1CC1C(=O)CC(=O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.