Complex sentence: Stercobilin is a tetrapyrrole chemical compound, responsible for the typical brown color of human feces, created from bacterial conversion of bilirubin to stercobilinogen and subsequent oxidation to stercobilin.
Split into simpler sentences: Stercobilin is a tetrapyrrole chemical compound, responsible for the typical brown color of human feces. It is created from bacterial conversion of bilirubin to stercobilinogen and subsequent oxidation to stercobilin.