[H][C@]1(C)CC(=O)[C@]2(O)C(=O)C3=C(O[C@@]2(C(=O)OC)[C@]1([H])O)C=CC(=C3O)C1=C(O)C2=C(O[C@@]3(C(=O)OC)[C@]([H])(O)[C@@]([H])(C)CC(=O)[C@]3(O)C2=O)C=C1