Showing structure for CC(C)(C)[Si](C)(C)N(C(=O)C1=CC=C(NCC2CNC3=C(N2)C(=O)N=C(N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[NH]3)C=C1)[C@@H](CCC(=O)O)C(=O)O