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