InChI=1S/C15H16O12/c16-5-2-1-4(3-6(17)13(22)23)11(7(5)18)26-15-10(21)8(19)9(20)12(27-15)14(24)25/h1-2,8-10,12,15-16,18-21H,3H2,(H,22,23)(H,24,25)