Cc1ncc(C(N)=O)c(N(C)C)n1    mol7213    0_1
Cc1nc(N(C)C)c(C(N)=O)c[nH+]1    mol7213    1_1
Cc1ncc(C(N)=O)c([NH+](C)C)n1    mol7213    1_2
Cc1ncc(C(N)=O)c(N(C)C)[nH+]1    mol7213    1_3