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(1S,2R,2'R,5R,6R,7R,8R,9R,12S,13S,17R)-15-(4-bromophenyl)-7,9-dihydroxy-2,5,6,8,12,17-hexamethyl-4,14,16-trioxaspiro[bicyclo[11.3.1]heptadecane-10,2'-oxiran]-3-one
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(1S,2R,5R,6R,7R,8R,9R,12S,13S,17R)-15-(4-bromophenyl)-7,9-dihydroxy-2,5,6,8,12,17-hexamethyl-10-methylene-4,14,16-trioxabicyclo[11.3.1]heptadecan-3-one
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(1S,2R,2'R,5R,6R,7S,8R,12S,13S,17R)-15-(4-bromophenyl)-7-hydroxy-2,5,6,8,12,17-hexamethyl-4,14,16-trioxaspiro[bicyclo[11.3.1]heptadecane-10,2'-oxirane]-3,9-dione
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