Showing structure for C[Si](C)(C)N(C(=O)C1=CC=C(N2C[C@H]3CNC4=C(C(=O)N([Si](C)(C)C)C(N([Si](C)(C)C)[Si](C)(C)C)=N4)N3C2)C=C1)C(CCC(=O)O)C(=O)O