Using O=C(O)c1cccnc1, O=[N+]([O-])c1ccc(CBr)cc1 to produce O=C(OCc1ccc([N+](=O)[O-])cc1)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.