Synonyms: Propanoicacid, 2-methyl-,1,1a,1b,4,4a,5,7a,7b,8,9-decahydro-4,7b-dihydroxy-1,1,3,6,8-pentamethyl-5-oxo-9aH-cyclopropa[3,4]benz[1,2-e]azulene-9,9a-diylester (9CI); 9aH-Cyclopropa[3,4]benz[1,2-e]azulene, propanoic acid deriv.;4,20-Dideoxy-5-hydroxyphorbol 12,13-diisobutyrate; Euphorbia factor Pr3