4H,9H-furo[2',3',4':4,5]naphtho[2,1-c]pyran-4,9-dione, 1,2,3,3a,5a,7,10b,10c-octahydro-7-hydroxy-3a,10b-dimethyl-, (3aS,5aR,7R,10bS,10cR)- 7-Hydroxy-3a,10b-dimethyl-1,2,3,3a,5a,7,10b,10c-octahydro-5,8-dioxa-acephenanthrylene-4,9-dione InChI=1/C16H18O5/c1-15-4-3-5-16(2)12(15)10(20-14(16)19)6-8-9(15)7-11(17)21-13(8)18/h6-7,10,12-13,18H,3-5H2,1-2H3/t10-,12-,13-,15-,16+/m1/s Yukonin rel-(3aR,5aS,7S,10bR,10cS)-7-hydroxy-3a,10b-dimethyl-1,2,3,3a,5a,7,10b,10c-octahydro-4H,9H-[2]benzofuro[7,1-fg]isochromene-4,9-dione