(-)-Swainsonine 1,2,8-Indolizinetriol, octahydro-, (1S,2R,8R,8aR)- 1,2,8-Indolizinetriol, octahydro-,[1S-(1.alpha.,2.alpha., 8.beta.,8a.beta.)]- NSC614553 SWAINSONINE Tridolgosir