US  2020/0050105  Al  67  Feb. 13, 2020  -continued  x~ 1  X$^{1 }$ 0  CF3  I  Oi-S03- XI  X  xi  xi  o  CF3  x•  o~-so  xi  2  xi  xi  o  CF3  x•  ’  oi-so,  xi  X  )=o  xi  HN  0  CF3  x•  ’  oi-so  HN>= 0  X  )=o  xi  -~NO  CF3  x•  ’  oi-so,  HN>= 0  X  )=o  xi  -~NO  CF3  x•  ’  oi-so  -)=o  X  \  x•-d---<-t  p 2 c-S03- -continued 