Showing structure for COC1=CC(NC2=NC=C(F)C(N=C3C=CC4=C(N(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(=O)C(C)(C)O4)N3[Si](C)(C)C)=N2)=CC(OC)=C1OC