Yes, you read correctly! I have officially completed my mobile. It took weeks of planning and about 20 minutes to get it hung up! Here is a picture of it!
It slowly spins in a circle and I am amazingly proud of it. The big circular molecule is benzine. The second one down is propane and the last ones are water and formaldehyde. And, that is that. I had originally planned to have some more layers, but the weight ended up not really working out that way! Either way I am proud of it, and will now be moving on to my next project.