SMILES: C[NH2+][C@H]1C[C@H]([C@@H]([C@H]([C@@H]1O)O[C@H]2[C@@H]3[C@H]([C@H]([C@H](O2)CO)O)O[C@@]4(O3)[C@@H]([C@H]([C@H]([C@H](O4)C(CO)[NH3+])O)O)O)O)[NH3+]
Description: The molecule is an ammonium ion that is the trication of hygromycin B arising from protonation of the three amino groups; major species at pH 7.3. It is a conjugate acid of a hygromycin B.