Using CC(=O)n1nc(-c2cccc([N+](=O)[O-])c2)n2nc(C)cc12 to produce Cc1cc2n(n1)C(c1cccc([N+](=O)[O-])c1)N=N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.