Nc1c2ccccc2nc2c(N)cccc12    mol14521    0_1
Nc1c2ccccc2nc2c([NH3+])cccc12    mol14521    1_1
Nc1c2ccccc2[nH+]c2c(N)cccc12    mol14521    1_2
Nc1cccc2c([NH3+])c3ccccc3nc12    mol14521    1_3