Showing structure for COC1=CC2=C(C(O[Si](C)(C)C)=C1OC1OC(CO[Si](C)(C)C)C(O)C(O[Si](C)(C)C)C1O)C(=O)C=C(C1=CC=C(O)C(O[Si](C)(C)C)=C1)O2