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  • methyl (Z)-2-((4S,4aR,5aR,6aS,9aS,9bS)-4,6a-dimethyl-4-(2-((2-nitrophenyl)selanyl)ethyl)-7-oxodecahydrocyclopenta[3,4]naphtho[1,8a-b]oxiren-3(4H)-ylidene)acetate

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