Showing structure for C[Si](C)(C)OCC1OC(C2=C(O)C=C3OC(C4=CC=C(O)C(O[Si](C)(C)C)=C4)=CC(=O)C3=C2O)C(OC2OC(CO)C(O)C(O[Si](C)(C)C)C2O)C(O)C1O