D:A-Friedooleanane-3,12-dione;3,13(2H,4H)-Picenedione, octadecahydro-4,4a,6b,8a,11,11,12b,14a-octamethyl-,(4R,4aS,6aS,6bR,8aR,12aR,12bS,14aS,14bS)-; Prionostemmadione
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