Using CCOC(C)=O, O=C(O)c1ccc(Br)c([N+](=O)[O-])c1 to produce COC(=O)c1ccc(Br)c([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.