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