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