Showing structure for COC1=C(O)C=C(/C=C/C2=CC(O[Si](C)(C)C(C)(C)C)=CC3=C2C2(C(=O)O3)C3=C(O)C=C(O)C=C3OC2C2=CC=C(O)C=C2)C=C1O[Si](C)(C)C(C)(C)C