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(5S)-5-[(1S,4R,5R,6R,11R,12S,16R,18S,21R)-11,18-Dihydroxy-4,6,12,17,17-pentamethyl-9-oxahexacyclo[11.9.0.01,21.04,12.05,10.016,21]docosan-8-yl]-4,4-dimethyl-1,3-dioxolan-2-one


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