Using OB(O)Oc1ccccc1, COc1ccc(Br)c([N+](=O)[O-])c1 to produce COc1ccc(-c2ccccc2)c([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.