Nc1ncnc2c1cnn2-c1ccccc1    SM11    0_1
Nc1nc[nH+]c2c1cnn2-c1ccccc1    SM11    1_1
Nc1ncnc2c1c[nH+]n2-c1ccccc1    SM11    1_2
Nc1[nH+]cnc2c1cnn2-c1ccccc1    SM11    1_3
[NH3+]c1ncnc2c1cnn2-c1ccccc1    SM11    1_4