Showing structure for COC1=CC(C2OCC(CC3=CC(OC)=C(O[Si](C)(C)C(C)(C)C)C(OC)=C3)C2COC2OCC(O[Si](C)(C)C(C)(C)C)C(O[Si](C)(C)C(C)(C)C)C2O)=CC(OC)=C1O