CN(C)c1cc(N(C)C)nc(N)n1    mol6999    0_1
CN(C)c1cc([NH+](C)C)nc(N)n1    mol6999    1_1
CN(C)c1cc(N(C)C)nc([NH3+])n1    mol6999    1_2
CN(C)c1cc(N(C)C)[nH+]c(N)n1    mol6999    1_3