Showing structure for CC(=O)O[C@H]1C[C@@]2(C)[C@@H](C[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]3[C@@]4(C)CC[C@@H](O)[C@@H](C)[C@@H]4CC[C@@]32C)/C1=C(\CCC=C(C)C)C(=O)O