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