Atomic structure
There is only one chemically distinct structure:
O=C(O[C@H]1[C@H](Oc2c(-c3ccc(O)c(O)c3)oc3cc(O)cc(O)c3c2=O)O[C@H](CO)[C@@H](O)[C@@H]1O)c1cc(O)c(O)c(O)c1