1H-Naphtho[2,1-b]pyran-1-one, 5-(acetyloxy)-3-ethenyldodecahydro-6,10,10b-trihydroxy- 3,4a,7,7,10a-pentamethyl-, [3R-(3.alpha.,4a.beta., 5.beta.,6.beta.,6a.alpha.,10.alpha.,10a.beta.,10b.alpha.)]- 66575-29-9 Colforsin Forskolin NSC375489