US 2020/0050104 Al  16  Feb. 13, 2020  -continued  Br  fu-Q-0  C  Br  0  0  F  F  o- R,-Q-<:  ~:  OH  Br  Br  0~  0~  Y-< Y-<  Y--(  Br  Br  Br  o~  o~cc,  o  Br  O  Br  O  Br  0  Y-< Y-< Y-<  &  &  &  -continued  Br  Br  Y-(}-o_F  Br  F  \j  F  0  o- Br  Br  r=\__Jo  _r<~F  F  O  )--f-~\  0  \  j  &  ~  F  F  0  o- Br  Br  F  \  j  F  y-<~O  C  Br  Br  Br  Y-<-o-< ,  - F  0  fu  0-Q-{  F  F  Br  Br  Y-<-o-<~F  F  0  &  0  \  j  o- F  F 