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