Showing structure for CC(C)(C)[Si](C)(C)OC1=C(O)C=C(C(=O)OC2OC(CO)C3OC(=O)C4OC(=O)CC(C(=O)O)C4C4=C(C=C(O)C(O)=C4O)C(=O)OC2C3O[Si](C)(C)C(C)(C)C)C=C1O