Showing structure for CC(=O)OCC1OC(OC2=CC(O)=C3C(=O)C=C(C4=CC=C(O[Si](C)(C)C(C)(C)C)C=C4)OC3=C2)C(O[Si](C)(C)C(C)(C)C)C(O[Si](C)(C)C(C)(C)C)C1O