4H-Pyran-4-one,2-[(1R,2R,3R,4R,5E,7S)-2,4- dihydroxy-7-[6-[(1S,2R)-2-hydroxy-1- methylbutyl]-3,5-dimethyl-4-oxo-4H-pyran- 2-yl]-1,3,5-trimethyl-5-octenyl]-6-ethyl-3,- 5-dimethyl-