O=[N+]([O-])c1n[n-]c(-c2nc([N+](=O)[O-])n[nH]2)n1    mol25543    -1_1
O=[N+]([O-])c1n[n-]c(-c2nc([N+](=O)[O-])n[n-]2)n1    mol25543    -2_1