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(4E,11E,13E)-(1S,6R,10R,15S,18R,19R,20S)-8,8,15-trimethyl-18-((R)-1-methylbut-3-ynyl)-19-triethylsilanyloxy-7,9,17,23-tetraoxatricyclo[18.2.1.06,10]tricosa-4,11,13-trien-16-one
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(4E,11E,13E)-(1S,6R,10R,15S,18R,19R,20S)-18-((R)-3-iodo-1-methylbut-3-enyl)-8,8,15-trimethyl-19-triethylsilanyloxy-7,9,17,23-tetraoxatricyclo[18.2.1.06,10]tricosa-4,11,13-trien-16-one
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(4E,11E,13E)-(1S,6R,10R,15R,18R,19R,20S)-8,8,15-trimethyl-18-((S)-1-methylbut-3-ynyl)-19-triethylsilanyloxy-7,9,17,23-tetraoxatricyclo[18.2.1.06,10]tricosa-4,11,13-trien-16-one
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(4E,11E,13E)-(1S,6R,10R,15R,18R,19R,20S)-18-((S)-3-iodo-1-methylbut-3-enyl)-8,8,15-trimethyl-19-triethylsilanyloxy-7,9,17,23-tetraoxatricyclo[18.2.1.06,10]tricosa-4,11,13-trien-16-one
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