Original sentence: Dammarane type ginsenosides includes 2 classifications: the 20(S)-protopanaxadiol [ppd] and 20(S)-protopanaxatriol [ppt] classifications
Edited sentence: Dammarane type ginsenosides includes 2 classifications: the 20(S)-protopanaxadiol (ppd) and 20(S)-protopanaxatriol (ppt) classifications