Showing structure for C=CC1=C(C)C(CC2=C(C)C(CCC(=O)O[Si](C)(C)C)=C(CC3=C(CCC(=O)O[Si](C)(C)C)C(C)=C(CC4NC(=O)C(C)=C4CC)N3[Si](C)(C)C)[NH]2)NC1=O