ethyl (2E,4R,5R)-4,5-dihydroxy-4-methylhex-2-enoate

(2S,3S,4E)-3-hydroxy-2,4-dimethyl-4-hexenoic acid methyl ester

(4S,2'S,3'S,4'E)-3-(2',4'-dimethyl-3'-hydroxy-1'-oxo-4'-hexenyl)-4-isopropyl-2-oxazolidinone