Using CC(C)(C)OC(=O)N1C[C@H]2CC(=O)C[C@H]2C1 to produce CC(C)(C)OC(=O)N1C[C@H]2CC(O)C[C@H]2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.