81040-61-1 Oxepino(4,3-d)oxireno(3,3a)indeno(4,5-b)oxepin-5,9(6H,7H)-dione,1-(3-furanyl)-1,2,2a,3b,6a,11a,11b,12,13,13a-decahydro-3b,7,7,11a,13a-pentamethyl-, (1S,2aR,3aS,3bR,6aR,11aS,11bR,13aS)-