We've found chemicals for use in industry and health in plants, fungi, and bacteria, but the insects rule the planet, and some of the poisons,venoms,pheromones, antibiotics, and other defensive chemicals, produced by insects, designed through natural selection, over millions of years, are perfect for specific tasks, while we struggle with artificial substitutes.
There are billions of undiscovered insect chemicals, many will give us a greater insight into chemical engineering, materials sciences, and protein construction, Some will be so exotic, that they will cause the creation of new threads, even new scientific fields..
All we have to do is look - before we leap.