Showing structure for C[Si](C)(C)OC1=C(O)C=C(C(=O)OCC2=CC(O)=C(OC3OC(CO)C(O[Si](C)(C)C)C(O)C3O)C(O)=C2)C(OC2=CC(C(=O)O)=CC(O)=C2O)=C1O