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