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(2S,4E,6Z,9S,11R,13S,15S,16S)-2-((1R,2R)-2-formylcyclopentyl)-16-hydroxy-9,11,13,15-tetramethyl-8,18-dioxooxacyclooctadeca-4,6-diene-7-carbonitrile
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(2S,4E,6Z,9S,11R,13S,15S,16S)-16-hydroxy-2-((1R,2R)-2-(hydroxymethyl)cyclopentyl)-9,11,13,15-tetramethyl-8,18-dioxooxacyclooctadeca-4,6-diene-7-carbonitrile
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(4E,6Z)-(2S,9S,11R,13S,15S,16S)-2-[(1R,2R)-2-(2-Methoxy-ethoxymethoxymethyl)-cyclopentyl]-16-methoxymethoxy-9,11,13,15-tetramethyl-8,18-dioxo-oxacyclooctadeca-4,6-diene-7-carbonitrile
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(1'R,1S,2S,2'R,8R,9S,11R,13S,15S,16S)-2-[8,16-bis-(tert-butyl-dimethylsilanyloxy)-7-cyano-9,11,13,15-tetramethyl-18-oxo-oxacyclooctadeca-4E,6Z-dien-2-yl]-cyclopentane-1'-carboxylic acid 2-trimethylsilanyl-ethyl ester
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(1S,1'R,2S,2'R,7R,8S,10R,12S,14S,15S)-2-[7,15-bis-(tert-butyl-dimethylsilanyloxy)-16-carboxy-6-cyano-1-hydroxy-8,10,12,14-tetramethyl-hexadeca-3E,5Z-dienyl]-cyclopentane-1'-carboxylic acid 2-trimethylsilanyl-ethyl ester