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