135  US 9,323,153 B2  136  -continued  -continued  (Y!yYOMe  yV  OMe  (Ab-248)  CH3  I  -+CH2-C-,-- OAO  ¢  0  I  :$s:  F  F  F  F  O=S=O  I  oe  CO)  [Chem. 32-31]  0  I  ~i=S=~  F  F  F  F  O=S=O  I  N0  I  O=S=O  F+F  F  (Ab-249)  (Ab-250) 