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