SMILES: C1[C@H]([C@@H]([C@H]([C@@H]([C@H]1[NH3+])O[C@@H]2[C@@H]([C@H]([C@@H]([C@H](O2)C[NH3+])O)OP(=O)([O-])[O-])O)O)O[C@@H]3[C@@H]([C@H]([C@@H]([C@H](O3)CO)O)[NH3+])O)[NH3+]
Description: The molecule is the doubly positive charged ammonium ion obtained from protonation of the four amino groups and deprotonation of the phosphate OH groups of kanamycin A 3'-phosphate; major species at pH 7.3. It is a conjugate acid of a kanamycin A 3'-phosphate.