Atomic structure
There is only one chemically distinct structure:
O=C(OC[C@H]1O[C@@H](Oc2c(-c3ccc(O)c(O)c3)oc3cc(O)cc(O)c3c2=O)[C@H](OC(=O)c2cc(O)c(O)c(O)c2)[C@@H](O)[C@@H]1O)c1cc(O)c(O)c(O)c1