Showing structure for CC(C)(C)[Si](C)(C)NC1=NC(N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)=NC2=NC=C(CNC3=CC=C(C(=O)N(C(CCC(=O)O)C(=O)O)[Si](C)(C)C(C)(C)C)C=C3)N=C12