Showing structure for COC1=C(O)C=C(C(=O)O[C@@H]2CC3=C(O)C=C(O)C=C3O[C@@H]2C2=CC=C(O)C(O[Si](C)(C)C(C)(C)C)=C2)C=C1O[Si](C)(C)C(C)(C)C