Showing structure for CN1C=C(C2=CN3N=CN=C(N4CCN(C5=NC=C([C@](C)(C6=CC=C(F)C=C6)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C=N5)CC4)C3=C2)C=N1