I wrote this add-in back in 2012 or earlier.  It's simple in that it just joins the dots between existing tools and "irons out the bumps".  The tools it uses are Balloon (http://users.abo.fi/mivainio/balloon/index.php) for energy minimization and JMol/RasWin for the 3D molecule viewer(s).  The user can choose which viewer they want.  It demonstrates one of the strengths of BIOVIA Draw: its ability to be extended with add-ins.  

I'm posting about it here because now that we can nolonger support the DS Visualizer ActiveX application, you may find it useful.

https://www.youtube.com/watch?v=ww2olLH9qkw&list=PLHzT-QEgizWZju4oRCUrepPUar89jpycl&index=15

More videos highlights on my BIOVIA Draw add-ins play list here:

https://www.youtube.com/playlist?list=PLHzT-QEgizWZju4oRCUrepPUar89jpycl

There are more, approx. 50 in total. If you'd like to know more then please email james.jack@3ds.com