Showing structure for CC1=C2CC3=C(C)C(CCC(=O)O)=C(CC4=C(CCC(=O)O[Si](C)(C)C)C(C)=C(CC5=C(CCC(=O)O)C(C)=C(CC(=C1CCC(=O)O[Si](C)(C)C)[NH]2)[NH]5)[NH]4)[NH]3