Using CC(C)(C)OC(=O)N[C@H]1C[C@@H](CBr)OC1=O, [N-]=[N+]=[N-] to produce CC(C)(C)OC(=O)N[C@H]1C[C@@H](CN=[N+]=[N-])OC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.