No matter how big the network of neurons, alone it is still entirely driven by uncontrollable deterministic action of previous physical events. I can see how this internal complexity can produce complex reactions to events, but these reactions do not define conscious thought or have the freedom to drive our free thought processes. I know that the materialist explanation will claim that our freedom to drive thought processes is an illusion, but I still have to claim that my freedom to compose and write this post is no illusion because it is me, not the aimless forces of nature which is responsible for this post.
I was simply responding to your rather odd and mistaken view that only a few molecules(and curious ones at that) make up our brain. In fact, neurons are cells, and cells are made up of molecules, such as phospholipids and proteins. I'm glad that you now seem to be having second thoughts about that remark.
As far as your personal views on the subject of souls and free will are concerned, that's up to you. Obviously I don't share them, especially as you seem unable to express cogent arguments to support them, preferring to use pure assertion and a certain amount of incredulity that others may hold very different views to your own. Still, that's life, I suppose.