InChI=1S/C19H13NO6/c21-11-6-20-16-13-10(11)5-12-18(26-7-25-12)14(13)8-3-1-2-4-9(8)15(16)17(22)19(23)24/h1-5,11,20-21H,6-7H2,(H,23,24)