InChI=1S/C17H16O11/c1-6(18)25-10-5-8-7(2-3-11(19)26-8)4-9(10)27-17-14(22)12(20)13(21)15(28-17)16(23)24/h2-5,12-15,17,20-22H,1H3,(H,23,24)