Using COC(=O)[C@@H]1[C@H]2C[C@H]([C@H](N=[N+]=[N-])C2)N1C(=O)OC(C)(C)C to produce COC(=O)[C@@H]1[C@@H]2C[C@@H](N)[C@@H](C2)N1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.