Using Cc1nnc(CNC(=O)CCl)n1-c1ccc(Cl)cc1C(=O)c1ccccc1Cl, [N-]=[N+]=[N-] to produce Cc1nnc(CNC(=O)CN=[N+]=[N-])n1-c1ccc(Cl)cc1C(=O)c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.