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((2R,3aS,5R,5'R,6S,6''S,7aS)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-6-methyl-2,3,3a,3',4',5'',6,6'',7,7a-decahydrodispiro[furo[3,2-b]pyran-5,2'-furan-5',2''-pyran]-6''-yl)methyl pivalate
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(E)-5-((2R,3aS,3''R,5R,5'R,6S,6''S,7aS)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-6-methyl-3''-((triethylsilyl)oxy)dodecahydrodispiro[furo[3,2-b]pyran-5,2'-furan-5',2''-pyran]-6''-yl)pent-4-en-1-yl pivalate
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((2R,3aS,5R,5'R,6S,6''S,7aS)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-6-methyl-2,3,3a,3',4',5'',6,6'',7,7a-decahydrodispiro[furo[3,2-b]pyran-5,2'-furan-5',2''-pyran]-6''-yl)methanol
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tert-butyl(((2R,3aS,3''R,5R,5'R,6S,6''S,7aS)-6-methyl-3''-((triethylsilyl)oxy)-6''-vinyldodecahydrodispiro[furo[3,2-b]pyran-5,2'-furan-5',2''-pyran]-2-yl)methoxy)diphenylsilane