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