COC(=O)CC1=C(C)[C@H]2C[C@]3(C)C(=O)O[C@@H]4O[C@H](C)[C@]5(O)O[C@H]([C@H]6O[C@@]16C(C)(C)O)[C@@]2(C)[C@@]51C(=O)O[C@@]413 Talaromynoid I