Showing structure for COC(=O)/C(=C/C1=CC=C(O[Si](C)(C)C)C(O)=C1)OC1=CC=C(/C=C/C(=O)OC(CC2=CC=C(O[Si](C)(C)C)C(O[Si](C)(C)C)=C2)C(=O)O[Si](C)(C)C)C=C1O