Showing structure for CC(=O)OC(C/C=C(\C)C(=O)O[Si](C)(C)C(C)(C)C)C(C)C1CC(O[Si](C)(C)C(C)(C)C)C2(C)C3=CCC4C(C)(CCC(OC(C)=O)C4(C)C)C3=CCC12C