InChI=1S/C23H46O4/c1-21(2)17-15-13-11-9-7-5-3-4-6-8-10-12-14-16-18-23(26)27-20-22(25)19-24/h21-22,24-25H,3-20H2,1-2H3/t22-/m1/s1