Showing structure for COC1=CC=C(C2OCC3(OC(C)=O)C(C4=CC=C(OC5OC(CO)C(O)C(O[Si](C)(C)C(C)(C)C)C5O[Si](C)(C)C(C)(C)C)C(OC)=C4)OCC23)C=C1OC