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