You can’t just evolve to produce any random molecule especially anything with actual chemical complexity. Scores of extremely complex enzymes are needed to prod

You can’t just evolve to produce any random molecule especially anything with actual chemical complexity. Scores of extremely complex enzymes are needed to produce cholesterol and pretty much all small molecule steroids we produce are derivatives of it. Plants have a vast repertoire of enzyme pathways to produce many small molecules which they can mix and match quickly to produce compounds of great chemical complexity but humans cannot.