InChI=1S/C20H30O5/c1-2-18(21)14-11-9-7-5-3-4-6-8-10-12-15-19(25-24)16-13-17-20(22)23/h3-4,7-12,14-15,18-19,21,24H,2,5-6,13,16-17H2,1H3,(H,22,23)/b4-3-,9-7-,10-8-,14-11+,15-12+/t18-,19-/m1/s1