Complex sentence: An example is the industrial production of cortisone, which one step is the bioconversion of progesterone to 11-alpha-Hydroxyprogesterone by Rhizopus nigricans.
Split into simpler sentences: An example is the industrial production of cortisone. One step is the bioconversion of Progesterone to 11-alpha-Hydroxyprogesterone by Rhizopus nigricans.