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