Cn1nnnc1CC(=O)O    mol12952    0_1
Cn1n[nH+]nc1CC(=O)[O-]    mol12952    0_2
Cn1nn[nH+]c1CC(=O)[O-]    mol12952    0_3
Cn1[nH+]nnc1CC(=O)[O-]    mol12952    0_4
Cn1nnnc1CC(=O)[O-]    mol12952    -1_1