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4-(2,6,6-triméthylcyclohex-1-ène-1-yl)-but-3-ène-2-one/4-(2,6,6-triméthyl-2-cyclohexène-1-yl)-3-butène-2-one/ionone
4-(2,6,6-trimethylcyclohex-1-een-1-yl)-but-3-een-2-on/4-(2,6,6-trimethyl-2-cyclohexeen-1-yl)-3-buteen-2-on/ionon