InChI=1S/C18H20O12/c1-18(2)4-5(19)8-7(30-18)3-6(9(10(8)20)15(24)25)28-17-13(23)11(21)12(22)14(29-17)16(26)27/h3,11-14,17,20-23H,4H2,1-2H3,(H,24,25)(H,26,27)