C[C@H]1O[C@@H]2OC(=O)[C@]3(C)C[C@@H]4[C@]5(C)[C@H](O[C@]16O[C@]65[C@]23O)[C@@H]1O[C@]12C(=CC(=O)OC2(C)C)[C@@]4(O)CCl penilarane E