Showing structure for C[Si](C)(C)OC1=C(C2OC(CO)C(O)C(O[Si](C)(C)C)C2O[Si](C)(C)C)C(OC2OC(CO)C(O)C(O)C2O)=CC2=C1C(=O)C=C(C1=CC=C(O)C=C1)O2