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