CNc1nccc(N)n1    mol4098    0_1
CNc1nc(N)cc[nH+]1    mol4098    1_1
CNc1nccc(N)[nH+]1    mol4098    1_2
C[NH2+]c1nccc(N)n1    mol4098    1_3
CNc1nccc([NH3+])n1    mol4098    1_4