(2E,4E,6E)-7-[(4,4,7a-Trimethyl-2,4,5,6,7,7a-hexahydrobenzofuran)-2-yl]-3-methyl-2,4,6-octatrienoic acid methyl ester;5,8-Epoxy-5,8-dihydroretinoic acid methyl ester
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