Apr. 18,  2019  31  US 2019/0113844 Al  :( :( XR"  a;,,  O~F ~O  O  OH  l  CF3  0  0  CF 3  OH  OH  :( x:,  XR’  ~CC;~; tfO;  OH  \O+CF 3  O  OH  CF  OH  3  x:,  XR’  XRA  NF  4°  0  ’7\+:,, ’ ’ 0  ;  ~:  OH  3  F  OH  CF  0  x:•  XR’  x::;  F  F 3 Ct+O  O  O  O  F  CF 3  F  F  CF3  0  OH  CF  OH  3  OH 