c1ccc2[nH]nnc2c1    mol4684    0_1
c1ccc2[nH][nH+]nc2c1    mol4684    1_1
c1ccc2[nH+]n[nH]c2c1    mol4684    1_2
c1ccc2[n-]nnc2c1    mol4684    -1_1