180  US 9,052,590 B2  179  0  I  F*O  SF 0  F  F  F  F  O=S=O  eh  I  :+:  F  -continued  OH  OYOV  o-P  -continued  OH  oyo~o  n  O-sr’  - b  ~o  0 ~H,h0  (  )  I  ’to  F  F  F  F  O=S=O  06  I  (CF3SO$_{2}$ )2  OH  OH 