1-Oxaspiro(4.5)dec-3-en-2-one, 3-methyl-4-(2-methylbenzoyl)- 2-Methylbenzoyl-3 methyl-2 cyclohexane spiro-4,4-butene-2 olide-4 [French] 3-Methyl-4-(2-methylbenzoyl)-1-oxaspiro(4.5)dec-3-en-2-one 86560-12-5 BRN 5085555