InChI=1S/C20H32O5/c1-2-3-6-9-16(21)13-12-15-14-18(22)20(25)17(15)10-7-4-5-8-11-19(23)24/h12-13,16,18,21-22H,2-11,14H2,1H3,(H,23,24)/b13-12+