This is a pretty sucky solve, but it should be min bestagon. Look, I'm no good at cycles, and this is basically a production cycles puzzle in disguise, so I decided to sink more of my time on the much more interesting to me sum puzzle. Whether that was a good choice or not... probably not.

Anyhow, I'm constructing the molecule in a ring first and then adding the rest because trying to do it "by halves" was really difficult. Might be faster, but I'm aiming for 'not awful' not 'good' or fast. The line-swing regrabs are a bit silly but probably not the limiting factor here I hope. Getting the atoms moving in the right order also helped shave some cycles off. 

Anyways, hopefully not terrible