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