InChI=1S/C19H20O11/c20-5-11-15(26)17(28)18(29)19(30-11)13-10(24)4-9(23)12(16(13)27)14(25)6-1-2-7(21)8(22)3-6/h1-4,11,15,17-24,26-29H,5H2