Showing structure for COC1=CC(O[Si](C)(C)C(C)(C)C)=C(OC2OC(CO[Si](C)(C)C(C)(C)C)C(O)C(O[Si](C)(C)C(C)(C)C)C2O)C(O[Si](C)(C)C(C)(C)C)=C1C(C)=O