Using COC(=O)C[C@H]1CC[C@@H](c2ccc(O)cc2O)CC1 to produce O=C(O)C[C@H]1CC[C@@H](c2ccc(O)cc2O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.