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Atomic structure
There is only one chemically distinct structure:
COc1cc(/C=C/C(=O)OC[C@H]2O[C@@H](Oc3cc4oc(-c5ccc(O)cc5)cc(=O)c4c(O)c3[C@@H]3O[C@H](CO)[C@@H](O)[C@H](O)[C@H]3O)[C@H](O)[C@@H](O)[C@@H]2O)cc(OC)c1O