Showing structure for C[Si](C)(C)OC(=O)[C@H](CCC(=O)O)N(C(=O)C1=CC=C(N(CC2CNC3=C(N2)C(=O)N=C(N([Si](C)(C)C)[Si](C)(C)C)N3[Si](C)(C)C)[Si](C)(C)C)C=C1)[Si](C)(C)C