Using COC(=O)C1C(=O)CC(C)CC1(C)c1cccc(-c2ccccc2)c1 to produce COC(=O)C1C(O)CC(C)CC1(C)c1cccc(-c2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.