Atomic structure
There is only one chemically distinct structure:
CC(=O)OC[C@H]1O[C@@H](Oc2cc(O)c3c(=O)cc(-c4ccc(O)c(O)c4)oc3c2)[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@@H]1OC(C)=O