Saudin

(-)-Saudin

(5aR,11aS)-10-(3-Furanyl)-4,5,8aα,9,10,11b-hexahydro-3aβ,8β,11bα-trimethyl-5aα,10α-epoxy-5aH-furo[3,4-f]pyrano[4,3,2-de][1]benzopyran-3,7(3aH,8H)-dione