InChI=1S/C20H27NO9/c1-21(28)9-3-2-4-12(21)10-14(22)11-5-7-13(8-6-11)29-20-17(25)15(23)16(24)18(30-20)19(26)27/h5-8,12,15-18,20,23-25H,2-4,9-10H2,1H3,(H,26,27)