Cn1c(=O)c2[nH+]cc([O-])nc2n(C)c1=O    mol4840    0_1
Cn1c(=O)c2ncc(O)nc2n(C)c1=O    mol4840    0_2
Cn1c(=O)c2[nH+]cc(O)nc2n(C)c1=O    mol4840    1_1
Cn1c(=O)c2ncc(O)[nH+]c2n(C)c1=O    mol4840    1_2
Cn1c(=O)c2ncc([O-])nc2n(C)c1=O    mol4840    -1_1