Cc1c(O)[nH]c(=O)[nH]c1=O    mol9378    0_1
Cc1c([O-])[nH]c(=O)[nH]c1=O    mol9378    -1_1
Cc1c(O)[nH]c(=O)[n-]c1=O    mol9378    -1_2
Cc1c(O)[n-]c(=O)[nH]c1=O    mol9378    -1_3