CNc1ncnc2nccnc12    mol4831    0_1
C[NH2+]c1ncnc2nccnc12    mol4831    1_1
CNc1ncnc2[nH+]ccnc12    mol4831    1_2
CNc1nc[nH+]c2nccnc12    mol4831    1_3
CNc1[nH+]cnc2nccnc12    mol4831    1_4
CNc1ncnc2ncc[nH+]c12    mol4831    1_5