Atomic structure
There is only one chemically distinct structure:
*O[C@H]1[C@H](O)[C@@H](CO)O[C@@H](O[C@H]2[C@@H](O[C@H]3O[C@H](C(=O)O)[C@@H](O)[C@H](O)[C@H]3O)[C@H](O)[C@H](*)O[C@H]2C)[C@@H]1NC(C)=O