US 9,829,796 B2  230  229  -continued  (HR-18)  (HR-19)  (HR-20)  :t :t  F3C~CF  3  :(  :t  (HR-21)  F3C~CF3  (HR-22)  :t  :t~  l  A  CF 3  (HR-12)  (HR-13)  :t  (HR-14)  l  C3F 7  (HR-15)  :(  F3C~CF3  :t  (HR-16)  l  CF 3  (HR-17)  :t  F3C~CF  3 