InChI=1S/C18H18O11/c1-6-5-10(20)27-14-8(6)3-4-9(26-7(2)19)15(14)28-18-13(23)11(21)12(22)16(29-18)17(24)25/h3-5,11-13,16,18,21-23H,1-2H3,(H,24,25)