Subject: What is the most complex ion in the world?

I am studying complex ions in my chemistry class such as 
hexacyanobisethyladamideferrate.... and was wonder just how complex these 
ions can get. I know my question may seem rather ambiguous. Im not sure if 
this question may fall under the categories of macromolecules or proteins. 
And for that matter what is a macromolecule. I know diamond and other 
crystals can be considered just one big molucule but are there compounds 
(not polymers) that are really big?

Re: What is the most complex ion in the world?