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