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(R)-2-[(2R,4S,5S,6R)-6-{(1R,3R,4S,5S)-5-[(4R,5R)-5-((R)-1-Hydroxy-propyl)-2,2,5-trimethyl-[1,3]dioxolan-4-yl]-1,4-bis-methoxymethoxy-1,3-dimethyl-hexyl}-5-methyl-2-(2,4,6-trimethyl-phenyl)-[1,3]dioxan-4-yl]-thiopropionic acid S-pyridin-2-yl ester