3-Methyl-butyric acid (1R,2R,8S)-1-{(S)-1-[(2R,4R,5R)-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-ethyl}-2,4,6,8-tetramethyl-3,5,7-trioxo-decyl ester

3-Methyl-butyric acid (2S,3S,4R,5R,6S,11R)-8-((S)-sec-butyl)-3,5,9,11-tetramethyl-10-oxo-2-((S)-1,3,5-trimethyl-2,4,6-trioxo-octyl)-1,7-dioxa-spiro[5.5]undec-8-en-4-yl ester