Showing structure for CC(C)(/C=C/C(=O)C(C)(O)C1C(O[Si](C)(C)C)CC2(C)C3CC=C4C(CC(O[Si](C)(C)C)=C(O[Si](C)(C)C)C4(C)C)C3(C)C(O[Si](C)(C)C)=CC12C)O[Si](C)(C)C