Using Nc1cc(C(=O)O)cc(C(=O)O)c1, [N-]=[N+]=[N-] to produce [N-]=[N+]=Nc1cc(C(=O)O)cc(C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.