Showing structure for C[Si](C)(C)OC1=CC=C(/C=C/C(=O)OC2=CC3=C(OC4OC(CO)C(O)C(O[Si](C)(C)C)C4O)C=C(O)C=C3[O+]=C2C2=CC=C(O)C=C2)C=C1O[Si](C)(C)C