InChI=1S/C18H18O12/c1-26-9-4-7-2-3-11(19)28-8(7)5-10(9)29-12(20)6-27-18-15(23)13(21)14(22)16(30-18)17(24)25/h2-5,13-16,18,21-23H,6H2,1H3,(H,24,25)