Showing structure for C[Si](C)(C)OC1=CC(OC2OC(C(=O)O)C(O)C(O[Si](C)(C)C)C2O)=CC2=C1C(=O)C=C(C1=CC=C(OC3OC(CO)C(O)C(O[Si](C)(C)C)C3O)C(O)=C1)O2