Using [N-]=[N+]=[N-], Cc1cc(Cl)c2c(F)ccc(F)c2n1 to produce Cc1cc(N=[N+]=[N-])c2c(F)ccc(F)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.