Showing structure for C[Si](C)(C)OC1=CC=C(/C=C/C(=O)OC2C(OC3=C(C4=CC=C(O[Si](C)(C)C)C=C4)OC4=CC(O)=CC(O)=C4C3=O)OC(CO)C(O[Si](C)(C)C)C2O)C=C1