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