CC1=C2CC(=O)OC(C)(C)[C@]23O[C@@H]3[C@H]2O[C@@]3(O)[C@@H](C)O[C@@H]4OC(=O)[C@]35[C@@]2(C)[C@@H]1C[C@]5(C)C(=O)O4 Talaromynoid H