[NH3+]c1n[nH]c([O-])n1    mol25245    0_1
Nc1n[nH]c(O)n1    mol25245    0_2
Nc1nc([O-])[nH][nH+]1    mol25245    0_3
Nc1n[nH]c([O-])n1    mol25245    -1_1
Nc1n[n-]c(O)n1    mol25245    -1_2