991-07-1

12-(furan-3-yl)-6,6,8a,12a-tetramethyl-3,8,10-trioxo-4,4a,6,8,8a,9a,10,12,12a,13,14,14a-dodecahydro-3H-oxireno[d]pyrano[4',3':3,3a][2]benzofuro[5,4-f]isochromen-7-yl acetate