Atomic structure
There is only one chemically distinct structure:
Cc1cc(O)c2c(c1)[C@@H](C1O[C@@H](OC(=O)c3ccccc3)[C@H](O)[C@H](O)[C@H]1O)c1cc(O)cc(O[C@@H]3O[C@H](CO)[C@@H](O)[C@H](O)[C@H]3O)c1C2=O