Using COC1C(O)COC(OCC2OC(OC3C(O)C(C)OC(CO)C3O)C(O)C(OC)C2O)C1O to produce O=C[C@H](O)[C@@H](O)[C@@H](O)[C@H](O)CO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.