Showing structure for COC1=CC(CC2C(=O)OCC2C(O[Si](C)(C)C)C2=CC=C(O[Si](C)(C)C)C(OC)=C2)=CC=C1OC1OC(C(=O)O[Si](C)(C)C)C(O[Si](C)(C)C)C(O)C1O