I ran across this friendly fellow while doing some research. It seems the oil responsible for all this horror (PMA) is useful as a tool in immunology research, since it makes your "worker-bee" immune cells fire the poison nets they use to kill bad guys. The structure is below, compared to the urushiol family of compounds found in poison oak. Those long ugly greasy side chains are likely helpful in adsorbing the compound to cell membranes. You know sometimes I really hate nature.
Above: PMA
Above: Urushiol
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