Using CC(C)(C)OC(=O)C[C@@H](CN=[N+]=[N-])Nc1ccc(C#N)c(Cl)c1 to produce CC(C)(C)OC(=O)C[C@@H](CN)Nc1ccc(C#N)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.