12-Methoxy-4,4,6a,8,13b-pentamethyl-1,4,4a,5,6,6a,9,13,13a,13b-decahydro-2H-benzo(a)furo(3,4-i)xanthene-3,11-dione
12-methoxy-4,4,6a,8,13b-pentamethyl-1,4,4a,5,6,6a,9,13,13a,13b-decahydro-2h-benzo(a)furo(3,4-i)xanthene-3,11-dione