Clc1nccc2[nH]cnc12    mol7971    0_1
Clc1nccc2[nH]c[nH+]c12    mol7971    1_1
Clc1[nH+]ccc2[nH]cnc12    mol7971    1_2
Clc1nccc2[n-]cnc12    mol7971    -1_1