Showing structure for C[Si](C)(C)OC1=C(O)C(C2=C(O)C(O[Si](C)(C)C)=C3OC(=O)C4=C5C(=C(O)C(O)=C4)OC(=O)C2=C35)=C2C(=O)OC3C(OC(C(CO)O[Si](C)(C)C)C3O)C2=C1O