InChI=1S/C20H27NO4/c1-15(2)13-21-20(23)9-4-3-7-17(22)8-5-6-16-10-11-18-19(12-16)25-14-24-18/h3,5-7,10-12,15,17,22H,4,8-9,13-14H2,1-2H3,(H,21,23)/b6-5+,7-3+