InChI=1S/C21H32O5/c1-11(2)18-14-8-17(22)12(3)13-6-7-21(25,10-26-5)16(13)9-15(14)20(4,24)19(18)23/h9,11-13,15,17,22,24-25H,6-8,10H2,1-5H3/b16-9+/t12-,13+,15-,17+,20-,21+/m1/s1