Showing structure for C[Si](C)(C)N1C2=C(N=C(N)N([Si](C)(C)C)C2=O)NCC1CNC1=CC=C(C(=O)NC(CCC(=O)NC(CCC(=O)NC(CCC(=O)[O-])C(=O)[O-])C(=O)[O-])C(=O)[O-])C=C1