InChI=1S/C21H40O4/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-25-21(24)20(23)19-22/h9-10,20,22-23H,2-8,11-19H2,1H3/b10-9-/t20-/m1/s1