Showing structure for COC(=O)NC(C(=O)N(N(CC1=CC=C(C2=CC=CC=C2)C=C1)CC(O)C(CC1=CC=CC=C1)NC(=O)C(N(C(=O)OC)[Si](C)(C)C)C(C)(C)C)[Si](C)(C)C)C(C)(C)C