Showing structure for C[Si](C)(C)NC1=NC(N([Si](C)(C)C)[Si](C)(C)C)=C2N=C(CNC3=CC=C(C(=O)NC(CCC(=O)O[Si](C)(C)C)C(=O)O[Si](C)(C)C)C=C3)C=NC2=N1