[R,E,(+)]-2-Methyl-2-phenyl-4-hexenoic acid
[R,E,(+)]-2-Methyl-2-phenyl-4-hexenoic acid ??
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[R,E,(+)]-2-Methyl-2-phenyl-4-hexenoic acid ?? ?? ? ???
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[R,E,(+)]-2-Methyl-2-phenyl-4-hexenoic acid ?? ??
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