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ethyl (1R,3aR,4S,4aR,7R,7aR,8aS)-4,8a-bis(hydroxymethyl)-3-isopropyl-7-methyl-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate
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ethyl (1R,3aR,4S,4aR,7R,7aR,8aS)-3-isopropyl-7-methyl-4,8a-divinyl-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate
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ethyl (1R,3aR,4S,4aR,7R,7aR,8aS)-4-formyl-8a-(hydroxymethyl)-3-isopropyl-7-methyl-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate
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ethyl (1R,3aS,4S,4aR,7R,7aR,8aS)-8a-(((tert-butyldimethylsilyl)oxy)methyl)-4-(hydroxymethyl)-3-isopropyl-7-methyl-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate
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ethyl (1R,3aR,4S,4aR,7R,7aR,8aS)-3-isopropyl-7-methyl-4-((R)-2-phenyl-1,3,2-dioxaborolan-4-yl)-8a-((S)-2-phenyl-1,3,2-dioxaborolan-4-yl)-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate