O=C([O-])Cc1c[nH]c[nH+]1    mol8549    0_1
O=C(O)Cc1c[nH]cn1    mol8549    0_2
O=C(O)Cc1c[nH]c[nH+]1    mol8549    1_1
O=C(O)Cc1c[n-]cn1    mol8549    -1_1
O=C([O-])Cc1c[nH]cn1    mol8549    -1_2