Using [N-]=[N+]=[N-], Cc1nn(-c2ccccn2)c2nc3ccccc3c(Cl)c12 to produce Cc1nn(-c2ccccn2)c2nc3ccccc3c(N)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.