Showing structure for C[Si](C)(C)OC1=CC(C2OC3=C(CC2OC(=O)C2=CC(O)=C(O)C(O)=C2)C(O)=CC2=C3C3(O)C(=O)OC(C(CO)O[Si](C)(C)C)C3(O)O2)=CC(O)=C1O[Si](C)(C)C