Nc1[nH]c(=O)c(C(=O)O)nc1C=O    mol9659    0_1
Nc1[nH]c(=O)c(C(=O)[O-])[nH+]c1C=O    mol9659    0_2
[NH3+]c1[nH]c(=O)c(C(=O)[O-])nc1C=O    mol9659    0_3
Nc1[n-]c(=O)c(C(=O)O)nc1C=O    mol9659    -1_1
Nc1[nH]c(=O)c(C(=O)[O-])nc1C=O    mol9659    -1_2
Nc1[n-]c(=O)c(C(=O)[O-])nc1C=O    mol9659    -2_1