SMILES: C(C[NH3+])C[NH2+]CC[C@@H](C(=O)[O-])[NH3+]
Description: The molecule is the alpha-amino-acid cation formed from carboxynorspermidine by zwitterion formation between the carboxy and alpha-amino groups and protonation of the nitrogen atoms at positions 5 and 9; the major structure of carboxynorspermidine at pH 7.3. It is a conjugate acid of a carboxynorspermidine.