InChI=1S/C19H15NO8/c1-25-18-16(23)11(19(24)20-7-15(21)22)4-10-6-13(28-17(10)18)9-2-3-12-14(5-9)27-8-26-12/h2-6,23H,7-8H2,1H3,(H,20,24)(H,21,22)