US 9,612,535 B2  -continued  234  233  OH  CH3  I  --+CH2-C-t-- OAO  0  I  O=S=O  F*F  F F  F  O=S=O  I  00  Ab-249  -continued  0  I  O=S=O  F*F  F F  F  F  O=S=O  I  N  I  O=S=O  F+F  F  MeOY  SUOMe  fi  I  ✓ ,:::;  OMe  Ab-250 