InChI=1S/C15H18O11/c1-23-10-5(3-4-6(16)11(10)24-2)14(22)26-15-9(19)7(17)8(18)12(25-15)13(20)21/h3-4,7-9,12,15-19H,1-2H3,(H,20,21)