InChI=1S/C15H14O11/c16-5-3-7(17)25-12-4(5)1-2-6(8(12)18)24-15-11(21)9(19)10(20)13(26-15)14(22)23/h1-3,9-11,13,15-16,18-21H,(H,22,23)