(2R,3S)-2-ethyl-3-<<(2R,4S,3S,5S,6R)-4-((1R)-2-hydroxy-1-methylethyl)>-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-6-yl>-3-methyl-1,4-dioxaspiro<4.4>nonane

(2R,3S)-2-ethyl-3-<<(2R,4S,3S,5S,6R)-2-(4-methoxyphenyl)-5-methyl-4-((1R)-1-methyl-2-(methylsulfonyloxy)ethyl)>-1,3-dioxan-6-yl>-3-methyl-1,4-dioxaspiro<4.4>nonane

ethyl (2E,4R)-4-<(2R,4S,5S,6R)-6-<(2R,3S)-2-ethyl-3-methyl-1,4-dioxaspiro<4.4>nonan-3-yl>-4-<2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl>>-2-methyl-2-pentenoate