InChI=1S/C20H27NO8/c1-21-9-3-2-4-12(21)10-14(22)11-5-7-13(8-6-11)28-20-17(25)15(23)16(24)18(29-20)19(26)27/h5-8,12,15-18,20,23-25H,2-4,9-10H2,1H3,(H,26,27)