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