2,4-Tetradecadienoic acid,(1R,3R,4R,4aS,4bS,5aR,6S,6aS,9aS,9bR)- 1,2,3,4,4a,4b,5a,6,6a,7,9a,9b-dodecahydro-3,6,- 6a,9b-tetrahydroxy-5a-(hydroxymethyl)-1,8- dimethyl-3-(1-methylethenyl)-7-oxobenz[7,8]- azuleno[5,6-b]oxiren-4-yl ester,(2E,4E)-