(3aR,4R,7R,8S,9S,10R,11R,13R,15R,15aR)-11-Benzyloxy-4-ethyl-8,10-dihydroxy-3a,7,9,11,13,15-hexamethyl-2-phenyl-decahydro-1,3,5-trioxa-cyclopentacyclotetradecene-6,14-dione

(2R,3S,4S)-3-Acetoxy-4-((2R,3R)-3-benzyloxy-6-{(S)-1-[(4S,5S)-5-((R)-1-hydroxy-propyl)-5-methyl-2-oxo-[1,3]dioxolan-4-yl]-ethyl}-3,5-dimethyl-3,4-dihydro-2H-pyran-2-yl)-2-methyl-pentanoic acid methyl ester