Cn1c2nc(=O)[nH]c-2c[nH]c1=O    mol9684    0_1
Cn1c2nc(=O)[nH]c-2c[n-]c1=O    mol9684    -1_1
Cn1c2nc(=O)[n-]c-2c[nH]c1=O    mol9684    -1_2