content_image/886480.jpg content_image/886481.jpg
described in JP-A 2010-215608, JP-A 2012-041320, JP-A 2012-106986, and JP-A 2012-153644. 

[0122] Examples of the anion having formula (IA) are shown below, but not limited thereto. 

<img src='content_image/886480.jpg'>

<img src='content_image/886481.jpg'>

