Using Cc1cn2cccc(O)c2n1, O=[N+]([O-])c1ccc(Cl)c(CBr)c1Cl to produce Cc1cn2cccc(OCc3c(Cl)ccc([N+](=O)[O-])c3Cl)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.