Added some pruning.

Hopefully this can speed things up a little.
Partial job with pruning.

I let this job run a little bit longer, but ultimately was eating 
up memory and moving slowly.
Use nonadiene instead of full fatty acid.

This uses 3,6-nonadiene as a model for the full linoleic acid (as in Tejero et al, 2007, J. Phys. Chem. B). It is a bit strange, since RMG does not recognize stereochemistry, so we can't do exactly the same fragment as in
the paper.
Result of nonadiene run.

Core: 27 species, 56 reactions
Edge: 11705 species, 57264 reactions.
Runtime: 4.8 days (!!)

This made some funky things via biradical combination and 
linear and cyclic biradical scission.

H_Abs at "C8" and "C11" as expected in paper but only C11 
radical stuck around. Addition of O2 occurred to form ROO 
which abstracted H from either H2O or the original nonadiene 
to get ROOH. Some intra-H migrations also occurred.

Note: had to remove Diels_alder_addition family due to 
strange error!