[R,(-)]-4-Methyloctanoic acid ethyl ester
[R,(-)]-4-Methyloctanoic acid ethyl ester ??
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[R,(-)]-4-Methyloctanoic acid ethyl ester ?? ?? ? ???
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[R,(-)]-4-Methyloctanoic acid ethyl ester ?? ??
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[R,(-)]-4-Methyloctanoic acid ethyl ester ?? ??: