Using COc1cc(C(O)C(C)(Oc2ccccc2)C(=O)O)ccc1OCc1ccccc1 to produce COc1cc(CC(C)(Oc2ccccc2)C(=O)O)ccc1OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.