Using [N-]=[N+]=[N-], CC1(C)OCc2cc(C(=O)CBr)ccc2O1 to produce CC1(C)OCc2cc(C(=O)CN=[N+]=[N-])ccc2O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.