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