US 10,754,248 B2  15  16  -continued  ¢ 0~:;  CF3  #  OH  OH  c,cwsu::rcc,  0 /’-yo-.......__,,,,,oMe  A l"-cF3  y  cc,  usu  $_{0}$/’-yo-.......__,,,,,oMe  ¢  l"-cF3  CF3  OMe  l  0  usu::rcc,  wherein, the broken line represents a bond.  Illustrative example of the cation having a partial struc› ture represented by the general formula (1) includes the  following cations, but the present invention is not restricted  thereto,  ~  CF3  I ✓,;:;  usu  ¢ 0~::3  CF3  #  OH  us~:tcc,  -continued  I  ~  I  CCX)  #  r  ~  ’  I  0  O=S=O  II  I  CC SY)  r.,V  cc:D 0  0  ~#  CC SY)  r.,V  CcO  ~ 