Showing structure for CC(C)(C)[Si](C)(C)OC1=C/C(=[O+]\C2OCC(O)C(O)C2O[Si](C)(C)C(C)(C)C)C=C2OC(C3=CC=C(O)C(O)=C3)=C(O[Si](C)(C)C(C)(C)C)C=C21