InChI=1S/C17H19NO9/c19-10(8-6-18-9-4-2-1-3-7(8)9)5-11(20)26-17-14(23)12(21)13(22)15(27-17)16(24)25/h1-4,6,10,12-15,17-19,21-23H,5H2,(H,24,25)