InChI=1S/C18H18O11/c1-7(19)27-9-2-3-10-8(4-12(20)28-11(10)5-9)6-26-18-15(23)13(21)14(22)16(29-18)17(24)25/h2-5,13-16,18,21-23H,6H2,1H3,(H,24,25)