Showing structure for C[Si](C)(C)OC(=O)C1=CC2=C(C3OC4=CC(O)=CC(O)=C4CC3OC(=O)C3=CC(O)=C(O)C(O[Si](C)(C)C)=C3)C=C(O[Si](C)(C)C)C(O)=C2C(=O)C(O)=C1