InChI=1S/C15H16O11/c16-6-1-5(2-7(17)4-6)3-8(18)14(24)26-15-11(21)9(19)10(20)12(25-15)13(22)23/h1-2,4,9-12,15-17,19-21H,3H2,(H,22,23)