InChI=1S/C17H19NO9/c19-8-2-3-10-9(5-8)7(6-18-10)1-4-11(20)26-17-14(23)12(21)13(22)15(27-17)16(24)25/h2-3,5-6,12-15,17-19,21-23H,1,4H2,(H,24,25)