Showing structure for COC1=CC(C2=CC(=O)C3=C(O[Si](C)(C)C)C=C(OC4OC(CO[Si](C)(C)C)C(O[Si](C)(C)C)C(O[Si](C)(C)C)C4O[Si](C)(C)C)C(OC)=C3O2)=CC=C1O