Synonyms: Triptolide,16-hydroxy-, (15S)-; (15S)-16-Hydroxytriptolide; 16-Hydroxytriptolide;16-Hydroxytryptolide;Trisoxireno[4b,5:6,7:8a,9]phenanthro[1,2-c]furan-1(3H)-one,3b,4,4a,6,6a,7a,7b,8b,9,10-decahydro-6-hydroxy-6a-(2-hydroxy-1-methylethyl)-,[3bS-[3ba,4aa,5aR*,6b,6ab(R*),7ab,7ba,8aR*,8ba]]-