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(-)-(2S,3S,6R,7R,10S,11S)-2,3:10,11-Diepoxy-6,7-O-isopropylidene-1,12-O-bis(4-nitrobenzoyl)-1,6,7,12-tetrahydroxydodecane
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(+)-(4S,15S,16R,19R,20R,23R,24R)-1-O-(tert-Butyldimethylsilyl)-4,15,24-O-tris(methoxymethyl)-16,19:20,23-diepoxy-1,4,15,24-tetrahydroxytetratriacosane