Synonyms: 2,4-Octadienoicacid,9a-(acetyloxy)-1a,1b,4,4a,5,7a,7b,8,9,9a-decahydro-4a,7b-dihydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-5-oxo-1H-cyclopropa[3,4]benz[1,2-e]azulen-9-ylester, [1aR-[1aa,1bb,4ab,7aa,7ba,8a,9b(2Z,4E),9aa]]-;1H-Cyclopropa[3,4]benz[1,2-e]azulene, 2,4-octadienoic acid deriv.; Euphorbiafactor Ti5