Using O=C(O)C(=Cc1ccc(Br)cc1)c1ccccc1[N+](=O)[O-] to produce Nc1ccccc1C(=Cc1ccc(Br)cc1)C(=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.