Showing structure for C[Si](C)(C)OC(=O)/C(=C1/OC(=O)C(C2=CC(=O)C(=O)C3=CC=C(C4=C(O)/C(=C(/C(=O)O)C5=CC=C(O)C=C5)OC4=O)C=C23)=C1O[Si](C)(C)C)C1=CC=C(O)C=C1