Using [N-]=[N+]=[N-], CCOC(=O)[C@@H]1CC[C@@H]2O[C@@H]2C1 to produce CCOC(=O)[C@@H]1CC[C@H](O)[C@@H](N=[N+]=[N-])C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.