(R)-2-tridecyl-2,5-dihydro-4-methyl-5-oxo-3-furoic acid

(R)-2,5-Dihydro-4-methyl-5-oxo-2-tridecyl-3-furancarboxylic acid

(R)-2α-Tridecyl-4-methyl-5-oxo-2,5-dihydrofuran-3-carboxylic acid