InChI=1S/C19H17NO9/c21-13-14(22)16(18(26)27)29-19(15(13)23)28-11-6-7(17(24)25)5-9-8-3-1-2-4-10(8)20-12(9)11/h1-6,13-16,19-23H,(H,24,25)(H,26,27)