Showing structure for C[Si](C)(C)OC(=O)CC[C@H](NC(=O)C1=CC=C(N(CC2CN([Si](C)(C)C)C3=C(C(=O)N=C(N)N3[Si](C)(C)C)N2[Si](C)(C)C)[Si](C)(C)C)C=C1)C(=O)O