Using COC(=O)c1cccc(-c2ccc(OC)c3c2CC(C)(C)O3)c1 to produce COc1ccc(-c2cccc(C(=O)O)c2)c2c1OC(C)(C)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.