InChI=1S/C20H24O6/c1-24-18-8-12(3-5-16(18)22)7-14-11-26-20(15(14)10-21)13-4-6-17(23)19(9-13)25-2/h3-6,8-9,14-15,20-23H,7,10-11H2,1-2H3/t14-,15-,20+/m0/s1