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  • (5aR,5bR,7aS,11aS,11bR,13S,13aS)-5b,8,8,11a,13a-pentamethyl-3-oxo-1,3,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydrochryseno[1,2-c]furan-13-yl acetate

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