Atomic structure

There are 2 chemically distinct structures. Please, select:

N[C@H]1[C@H](O)[C@@H](C(=O)O)O[C@@H](O)[C@@H]1N

SVG file SMILES Show 3D Ionize

N[C@H]1[C@H](O)[C@@H](C(=O)O)O[C@@H](O)[C@@H]1N