Complex sentence: As the chemistry of punicalagins became known, however, it was found to be not unique to pomegranate, but is also present in other plants, such as numerous species of the genus Terminalia, species chebula Retz.
Split into simpler sentences: As the chemistry of punicalagins became known it was found to be not unique to pomegranate. Punicalagins are present in numerous species of the genus Terminalia, species chebula Retz.