InChI=1S/C15H14O11/c16-8(5-1-2-6-7(3-5)24-4-23-6)14(22)26-15-11(19)9(17)10(18)12(25-15)13(20)21/h1-3,9-12,15,17-19H,4H2,(H,20,21)