COC(=O)C(O)[C@H]1C(C)(C)[C@]2(OC(C)=O)O[C@@]34C[C@@H]2C(=O)[C@]1(C)[C@H]3CC[C@]1(C)C4=CC(=O)O[C@H]1c1ccoc1	Hainanxylogranolide B