Using COC(=O)[C@H]1CC[C@@](C)(C(=O)OC)C1(C)C to produce COC(=O)[C@@H]1CC[C@@](C)(C(=O)OC)C1(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.