InChI=1S/C18H18O12/c1-6(19)27-9-5-8-7(3-4-10(20)28-8)14(15(9)26-2)29-18-13(23)11(21)12(22)16(30-18)17(24)25/h3-5,11-13,16,18,21-23H,1-2H3,(H,24,25)