7-hydroxy-3b,6,6,9a-tetramethyl-5,5a,6,7,8,9,9a,9b,10,11-decahydrophenanthro(1,2-b)furan-2,4(3aH,3bH)-dione
7-hydroxy-3b,6,6,9a-tetramethyl-5,5a,6,7,8,9,9a,9b,10,11-decahydrophenanthro(1,2-b)furan-2,4(3ah,3bh)-dione