InChI=1S/C17H21NO9/c1-17(2)5-8(19)10-7(18)3-6(4-9(10)27-17)25-16-13(22)11(20)12(21)14(26-16)15(23)24/h3-4,11-14,16,20-22H,5,18H2,1-2H3,(H,23,24)