C[NH2+]c1nc([O-])cnc1C(N)=O    mol6777    0_1
CNc1nc(O)cnc1C(N)=O    mol6777    0_2
CNc1nc([O-])c[nH+]c1C(N)=O    mol6777    0_3
C[NH2+]c1nc(O)cnc1C(N)=O    mol6777    1_1
C[NH2+]c1nc([O-])c[nH+]c1C(N)=O    mol6777    1_2
CNc1[nH+]c(O)cnc1C(N)=O    mol6777    1_3
CNc1nc(O)c[nH+]c1C(N)=O    mol6777    1_4
C[NH2+]c1[nH+]c(O)cnc1C(N)=O    mol6777    2_1
C[NH2+]c1nc(O)c[nH+]c1C(N)=O    mol6777    2_2
CNc1[nH+]c(O)c[nH+]c1C(N)=O    mol6777    2_3
CNc1nc([O-])cnc1C(N)=O    mol6777    -1_1