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(4R,5S,7R,8R,9R,10S,13R,14R,16S)-13,20-Epoxy-16-ethoxy-21-nitrilopicrasa-2,11-diene
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(4R,5S,7R,8R,9R,10S,12R,13S,14R,16S)-13,20-Epoxy-16-ethoxy-12-hydroxy-11-oxopicras-2-en-21-oic acid methyl ester
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(4R,5S,7R,8R,9R,10S,12R,13R,14R,16S)-13,20-Epoxy-16-ethoxy-12-(phenylseleno)-21-nitrilopicrasa-2-ene
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(4R,5S,7R,8R,9R,10S,11S,12S,13S,14R,16S)-13,20-Epoxy-16-ethoxy-11,12-dihydroxypicras-2-en-21-oic acid methyl ester