((mg(Subscript[TMPO, 4]))/(mg   sample))×((258.68   MWproduct)/(140.08   MW(Subscript[TMPO, 4])))×(((^31)P   NMRintegration   product)/((^31)P   NMRintegration   (Subscript[TMPO, 4])))×100=(%   potency(w/w)   of   theproduct   oil)