InChI=1S/C15H16O11/c16-6-3-5(1-2-8(17)18)4-7(9(6)19)25-15-12(22)10(20)11(21)13(26-15)14(23)24/h1-4,10-13,15-16,19-22H,(H,17,18)(H,23,24)