1,6,7,8-Indolizinetetrol, octahydro-, (1S-(1alpha,6beta,7alpha,8beta,8alphabeta))- 1,6,7,8-Tetrahydroxyoctahydroindolizine 6,7-Diepicastanospermine 6-Epicastanospermine 79831-76-8 CASTANOSPERMINE Castinospermine NSC 625381