c1ncc2cn[nH]c2n1    mol4920    0_1
c1ncc2c[nH+][nH]c2n1    mol4920    1_1
c1nc2[nH]ncc2c[nH+]1    mol4920    1_2
c1ncc2cn[nH]c2[nH+]1    mol4920    1_3
c1ncc2cn[n-]c2n1    mol4920    -1_1