Showing structure for CC1OC(C2=C(O[Si](C)(C)C)C=C3OC(C4=CC=C(O)C(O)=C4)=CC(=O)C3=C2O)C(OC2OC(C)C(O)C(O)C2O)C(O)=C1O[Si](C)(C)C