CNc1nc(=O)c(C)n[nH]1    mol9404    0_1
CNc1nc(=O)c(C)[nH+][nH]1    mol9404    1_1
CNc1[nH]nc(C)c(=O)[nH+]1    mol9404    1_2
C[NH2+]c1nc(=O)c(C)n[nH]1    mol9404    1_3