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(N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)=C(C3=CC=C(O)C=C3)N=C12