Using CC(=O)Nc1cc2ncnc(Nc3cccc(Br)c3)c2cc1[N+](=O)[O-] to produce Nc1cc2ncnc(Nc3cccc(Br)c3)c2cc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.