Cc1cc([N+](=O)[O-])cc2c1[nH+]nn2[O-] mol13372 0_1 Cc1cc([N+](=O)[O-])cc2c1nnn2O mol13372 0_2 Cc1cc([N+](=O)[O-])cc2c1nnn2[O-] mol13372 -1_1