Astatine as an anti cancer treatment

I found an interesting article entitled Astatine is a chemistry puzzle that shows anticancer promise so decided to try and build the molecule cited in the article from Molymods.

I am not too sure if I have done this correctly so am asking putting all the information here in the hope someone can perhaps help and advise further.

My main concern here is between the C6H4At – and N2 part, I have had to put in a carbon as I would assume the angle between the two indicates a carbon atom. This has left 2 Bonds free so not sure if I am meant to attach Hydrogen here.

So hopefully the above illustrates what I have built, so question is simply is this correct.

There is a thread on Science forums to discuss further here