Showing structure for CCC1=C(C)C(CC2=C(C)C(CCC(=O)O)=C(CC3=C(CCC(=O)O)C(C)=C(CC4NC(=O)C(C)=C4CC)N3[Si](C)(C)C(C)(C)C)[NH]2)N([Si](C)(C)C(C)(C)C)C1=O