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