CCn1n[nH+]nc1CC(=O)[O-]    mol14137    0_1
CCn1nnnc1CC(=O)O    mol14137    0_2
CCn1nn[nH+]c1CC(=O)[O-]    mol14137    0_3
CCn1[nH+]nnc1CC(=O)[O-]    mol14137    0_4
CCn1nnnc1CC(=O)[O-]    mol14137    -1_1