Using [N-]=[N+]=[N-], Cc1ccc(CCl)cc1C(Cl)=C(Cl)Cl to produce Cc1ccc(CN=[N+]=[N-])cc1C(Cl)=C(Cl)Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.