The answer is: unless you take Milk thistle seed extracts (Silymarin), you don't get any.

There are a plethora of phytonutritions that are common to vegetables and fruits, such as natural vitamins, flavonoids, and carotenoids (including lutein). However, there are other phytochemicals that can only be obtained from specific plant species. Gingerols is a good example as they are only available from Ginkgo biloba. Silymarin does not exist in meaningful quantities outside of Milk thistle fruits. Therefore, there is no question that you are totally lacking this nutrition unless you take Milk thistle fruits, or take commercial Milk thistle fruit (seed) extracts containing Silymarin as a dietary supplement.

Silymarin, or Milk thistle seed extracts are not soluble in water, and poorly absorbed in gastrointestinal tracts. Therefore, taking commercially available, concentrated extracts is recommended. Taking Milk thistle extract with food increases the chance of bile secretion and better absorption through enterocytes, the intestinal cells.