2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl-[1R-[1.alpha.[S*(Z)],3.beta.]]-chrysanthemat/pyrethrin I
2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1R-[1.alpha.[S*(Z)],3.beta.]]-chrysanthemate/Pyrethrin I