CN=c1ncc(C=O)c(N)n1C    mol7069    0_1
C[NH+]=c1ncc(C=O)c(N)n1C    mol7069    1_1
CN=c1[nH+]cc(C=O)c(N)n1C    mol7069    1_2
CN=c1ncc(C=O)c([NH3+])n1C    mol7069    1_3