24,25,26,27-tetranor-apotirucalla-(apoeupha)-1-senecioyloxy-3,7-dihydroxy-14,20,22-trien-21,23-epoxy
24,25,26,27-tetranor-apotirucalla-(apoeupha)-1-senecioyloxy-3,7-dihydroxy-14,20,22-trien-21,23-epoxy