Showing structure for C=CCC1=CC(O)=C(OC)C(OC2OC(CO[Si](C)(C)C(C)(C)C)C(O[Si](C)(C)C(C)(C)C)C(O[Si](C)(C)C(C)(C)C)C2O[Si](C)(C)C(C)(C)C)=C1