[CH2-][n+]1cc(O)c2ncccc2c1    mol26194    0_1
C[n+]1cc([O-])c2ncccc2c1    mol26194    0_2
C[n+]1cc(O)c2ncccc2c1    mol26194    1_1
C[n+]1cc([O-])c2[nH+]cccc2c1    mol26194    1_2