[O-]n1n[nH+]c2ccccc21    mol13201    0_1
On1nnc2ccccc21    mol13201    0_2
On1[nH+]nc2ccccc21    mol13201    1_1
On1n[nH+]c2ccccc21    mol13201    1_2
[O-]n1nnc2ccccc21    mol13201    -1_1