NCCc1c[nH]c2c1C(=O)C(=O)C=C2O    mol18179    0_1
[NH3+]CCc1c[nH]c2c1C(=O)C(=O)C=C2[O-]    mol18179    0_2
[NH3+]CCc1c[nH]c2c1C(=O)C(=O)C=C2O    mol18179    1_1