(+)-(4aS,8R,8aR)-8-hydroxy-1,4a,8a-trimethyl-4,4a,6,7,8,8a,9,10-octahydrophenanthren-2(3H)-one

(+)-(4'aS,8'R,8'aR,10'aR)-(4'aβ,8'β,8'aβ,10'aα)-3',4',4'a,6',7',8',8'a,9',10',10'a-decahydro-8'-hydroxy-1',1',4'a,8'a-tetramethylspiro[1,3-dioxolane-2,2'(1'H)-phenanthrene]