Showing structure for CC(C)(C)[Si](C)(C)OC1=C(O)C=C(C(=O)OCC2(O)C(OC(=O)C3=CC(O)=C(O)C(O)=C3)OC(COC(=O)C3=CC(O)=C(O)C(O)=C3)C2O)C=C1O