Showing structure for C[Si](C)(C)OC1=CC=C(C2OC3=C(CC2O[Si](C)(C)C)C(O)=CC(O)=C3C2C3=C(O)C=C(O)C=C3OC(C3=CC(O)=C(O)C(O[Si](C)(C)C)=C3)C2O)C=C1O