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(5aS,5bR,8aR,9aR)-7,7-dimethyl-2-phenyl-2,4,5a,5b,8a,9a-hexahydro-5,6,8,9-tetraoxa-1,2-diaza-cyclopenta[b]-as-indacene
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(3aS,5aS,5bR,8aR,9aR)-7,7-dimethyl-3a,4,5a,5b,8a,9a-hexahydro-3H-[1,3]dioxolo[4'',5'':4',5']furo[2',3':5,6]pyrano[4,3-c]isoxazole
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tert-butyl ((3aR,3bS,6R,7R,7aR,8aR)-6-(hydroxymethyl)-2,2-dimethylhexahydro-5H-[1,3]dioxolo[4',5':4,5]furo[3,2-b]pyran-7-yl)carbamate
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((3aR,3bS,6S,7R,7aR,8aR)-7-((tert-butoxycarbonyl)amino)-2,2-dimethylhexahydro-5H-[1,3]dioxolo[4',5':4,5]furo[3,2-b]pyran-6-yl)methyl 4-methylbenzenesulfonate