InChI=1S/C17H21NO8/c19-7-12-13(20)14(21)15(22)17(26-12)25-11(16(23)24)5-8-6-18-10-4-2-1-3-9(8)10/h1-4,6,11-15,17-22H,5,7H2,(H,23,24)