104544-35-6 5-Methyl-7-(2,6-dimethyl-6-ethoxycarbonyl-3-oxo-1-cyclohexyl)-2,4,6-heptatrienoic acid Cyclohexanecarboxylic acid, 2-(7-ethoxy-3-methyl-7-oxo-1,3,5-heptatrienyl)-1,3-dimethyl-4-oxo-, ethyl ester Retinoid C-17-diester