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(1S,2S,4aR,4bR,7S,9aS,10R,10aR)-2-acetoxy-7-hydroxy-1-methyl-8-methylene-13-oxo-1,2,4b,5,6,7,8,9,10,10a-decahydro-4a,1-(epoxymethano)-7,9a-methanobenzo[a]azulene-10-carboxylic acid
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(1S,2S,4aR,4bR,7S,9aS,10R,10aR)-10-formyl-7-hydroxy-1-methyl-8-methylene-13-oxo-1,2,4b,5,6,7,8,9,10,10a-decahydro-4a,1-(epoxymethano)-7,9a-methanobenzo[a]azulen-2-yl acetate
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