(5S,6S)-6-[(1E,3R,4R,6R,7Z,9Z)-3-[2-(allyloxycarbonylamino)ethyl]-6-tert-butyldimethylsiloxy-3,4-dihydroxy-10-[(1R,3S)-3-[(6S)-methyloctanoyloxy]cyclohexyl]-1,7,9-decatrienyl]-5-ethyl-5,6-dihydro-2H-pyran-2-one

(S)-6-Methyl-octanoic acid (1S,3R)-3-[(1Z,3Z,9E)-(5R,7R,8R)-8-(2-allyloxycarbonylamino-ethyl)-10-((2S,3S)-3-ethyl-6-oxo-3,6-dihydro-2H-pyran-2-yl)-5,7,8-trihydroxy-deca-1,3,9-trienyl]-cyclohexyl ester