content_image/911925.jpg content_image/911924.jpg content_image/911923.jpg content_image/911922.jpg content_image/911927.jpg content_image/911928.jpg content_image/911929.jpg content_image/911930.jpg
A molecular weight of the compound represented by the general formula (Al) is preferably from 200 to 2,000, and especially preferably from 400 to 1,000. 

<img src='content_image/911925.jpg'>

<img src='content_image/911924.jpg'>

<img src='content_image/911923.jpg'>

<img src='content_image/911922.jpg'>

<img src='content_image/911927.jpg'>

<img src='content_image/911928.jpg'>

<img src='content_image/911929.jpg'>

<img src='content_image/911930.jpg'>

-continued 

