Using COC(=O)c1cc([N+](=O)[O-])ccc1Br, O=[N+]([O-])O to produce COC(=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.