Showing structure for CC(C)(C)[Si](C)(C)OC1=C(C2=CC=C(OC3OC(C(=O)O)C(O)C(O[Si](C)(C)C(C)(C)C)C3O[Si](C)(C)C(C)(C)C)C(O)=C2)OC2=CC(O)=CC(O)=C2C1=O