Atomic structure
There is only one chemically distinct structure:
C[C@@H]1O[C@@H](OC[C@H]2O[C@@H](Oc3cc(O)c4c(=O)cc(-c5ccc(O)c(O)c5)oc4c3)[C@H](O)[C@@H](O)[C@@H]2O)[C@H](O)[C@H](O)[C@H]1O