[H][C@](C)(CC)[C@@]([H])(OC(C)=O)[C@@]([H])(C)C1=CC(=O)C2=C(O[C@]3(C)CC[C@@]4([H])O[C@]([H])(CC[C@]4(C)C3=C2)C(C)(C)O)C1=O