Using [NH4+], O=[N+]([O-])c1ccc(Br)cc1Nc1ccnc(Cl)n1 to produce Nc1nccc(Nc2cc(Br)ccc2[N+](=O)[O-])n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.