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+/--2,2-Diméthyl-3-+/-, 2méthyl-1-propènyl cyclopropanecarboxylate de 3-allyl-2-méthyl-4-oxo-2-cyclopentenyle
chem. +/--3-Allyl-2-methyl-4-oxocyclopent-2-enyl 2, 2-dimethyl-3- 2-methylprop-1-enyl cyclopropylcarboxylate; allethrin