Atomic structure
There is only one chemically distinct structure:
C=CCO[C@]1(C(=O)O)C[C@@H](O)[C@@H](O)[C@@H]([C@H](O)CO[C@]2(C(=O)O)C[C@@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O2)O1