6-Methoxy-3-methyl-5-ethyl-2-(1-oxoundecyl)-4H-pyran-4-one
6-Methoxy-3-methyl-5-ethyl-2-(1-oxoundecyl)-4H-pyran-4-one ??
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6-Methoxy-3-methyl-5-ethyl-2-(1-oxoundecyl)-4H-pyran-4-one ?? ??
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