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