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