Showing structure for C[Si](C)(C)NC1=NC(=O)C2=C(N([Si](C)(C)C)CC(CN(C3=CC=C(C(=O)N(C(CCC(=O)[O-])C(=O)[O-])[Si](C)(C)C)C=C3)[Si](C)(C)C)=N2)N1[Si](C)(C)C