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Benzyl [(2S,3R,4S,6R)-2-[[(1R,2R,5R,6S,7S,8R,9R,12R,13R)-2-ethyl-6-[(2R,4R,5S,6S)-4-methoxy-4,6-dimethyl-5-phenylmethoxycarbonyloxyoxan-2-yl]oxy-1,5,7,9,12-pentamethyl-4,11,15-trioxo-9-(2-oxopropyl)-3,10,14,16-tetraoxabicyclo[11.3.0]hexadecan-8-yl]oxy]-6-


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