2,4-Pentadienoic acid, 5-phenyl-, 3a,3b,3c,4a,5a,6,8a,9,10,10a-decahydro-5,5a-dihydroxy-4a-(hydroxymethyl)-7,9-dimethyl-10a-((1-methylethenyl)-6-oxo-2-phenyl-5H-2,8b-epoxyoxireno[6,7]azuleno[5,4-e]-1,3-benzodioxol-10-yl ester, [2S-[2.alpha.,3a.beta.,3b.beta.,3c.beta.,4a.beta.,5.beta.,5a.beta.,8a.beta.,8b.alpha.,9.alpha.,10.beta.(E,E),10a.beta.]]- 34807-41-5 MEZEREIN NSC239072