Showing structure for CC(C)(C)[Si](C)(C)OCC(=O)[C@]1(O[Si](C)(C)C(C)(C)C)[C@@H](O[Si](C)(C)C(C)(C)C)CC2C3CCC4=CC(=O)C=C[C@@]4(C)C3[C@H](O[Si](C)(C)C(C)(C)C)C[C@]21C