Atomic structure
There is only one chemically distinct structure:
CC(=O)N[C@H]1[C@H](O)O[C@H](CO[C@]2(C(=O)O)C[C@@H](O)[C@@H](O)[C@@H]([C@H](O)CO[C@]3(C(=O)O)C[C@@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O3)O2)[C@@H](O)[C@@H]1O